EP3916686A1 - Method for actuating a lock assembly - Google Patents

Abstract

1. The invention relates to a method (1) for operating a lock arrangement (2), comprising the following method steps: a) displaying placeholders, which include at least one image (11), on a screen (10) of a terminal (9), b) determining a selection comprising several placeholders by capturing several user entries of placeholders, the selection comprising at least one image, the individual user entries being generated by selecting one of the placeholders (11) on the screen (10), c) querying at least one Character, in particular a Unicode character, which is assigned to a selected placeholder, formation of a password from the requested characters, in particular Unicode characters, and sending the password, d) receiving the password, checking the password and, if the checking of the password is positive , Issuing an actuation command for opening and / or locking the lock arrangement (2).

Description

The invention relates to a method for operating a lock arrangement, a corresponding arrangement for executing the method and a computer program whose commands execute the method.

Different lock arrangements which can be operated electronically are known from the prior art. For this purpose, these lock arrangements usually have a keypad via which a corresponding password can be entered. As a rule, the password is a sequence of several digits. The lock arrangement can be on a safe or a door system, for example.

It is the object of the present invention to specify a method for actuating a lock arrangement, an arrangement and a computer program which enables comfortable and safe operation of the lock arrangement.

The object is achieved by the independent claim 1. Advantageous developments of the method are specified in the dependent method claims, the description and in the figures. Furthermore, the object is also achieved by an arrangement according to independent claim 14 and by a computer program according to claim 15. Advantageous developments of the arrangement and of the computer program product are given in the description and in the figures. Features and details that are described in connection with the method according to the invention also apply in connection with the arrangement according to the invention and the computer program product according to the invention, and vice versa. The features mentioned in the description and in the claims can each be essential to the invention individually or in combination. In particular, an arrangement and a computer program product are placed under protection with which the method according to the invention, in particular the method according to a of claims 1 to 13, can be carried out, as can a method that can be carried out with the arrangement according to the invention, in particular with an arrangement according to claim 14, or with the computer program product according to the invention, in particular with a computer program product according to claim 15.

A terminal device is used in the process.

Furthermore, a lock arrangement is used in the process. The lock arrangement is preferably located on or in a safe and comprises at least one lock. In the lock there is in particular at least one bolt for locking the safe and / or for blocking a handle of the safe.

Alternatively, the lock arrangement is preferably located on a door system. The door system in turn comprises in particular at least one door that is located in a frame. The lock arrangement can comprise a lock and / or a counter element. The counter element is in particular a counter lock (for example in a passive leaf) or a door opener. In particular, there is a bolt and / or a latch in the lock or counter lock. The door opener is designed in particular to selectively block and release a latch of a lock. Thus, this lock arrangement can be "locked" in different ways, for example by including or locking the bolt, by pulling back the latch or by releasing the latch.

The "actuation" of the lock arrangement describes in particular the opening or locking of the lock arrangement. This opening or locking of the lock arrangement leads to the fact that the door of the safe or the door system can be opened or locked.

The lock of the lock arrangement comprises in particular an actuation mechanism / electronics which carry out the opening and / or locking in response to an actuation command electromagnetically and / or with an electric motor.

In the method for actuating the lock arrangement, a number of placeholders are initially displayed on a screen of the terminal described above. The placeholders can be displayed on the screen at the same time or one after the other. At least one placeholder corresponds to an image. Thus, placeholders that include at least one image are initially displayed on the screen of the terminal.

The image can e.g. B. be designed as an icon, pictogram, symbol, photograph and / or as a reproduction of a graphic, a painting or a drawing. However, the image does not correspond to any "character". "Characters" are letters, digits, special characters and control characters of any character set, e.g. ASCII or Unicode. In other words, within the scope of this disclosure a distinction is made between “image” on the one hand and “characters” on the other. In particular, “characters” is an element to which a digital code is assigned in a standardized manner. In particular, the character is a Unicode character. In contrast, the image is not assigned to any digital code in a standardized manner.

The image can e.g. B. show an "object" as a photographic reproduction and / or as a drawing. The object can correspond to a house, a telephone, an animal, a plant, etc. These items can be anything.

In addition, it is preferably also provided that at least one image depicts an “activity” such as, for example, running, sitting, swimming, etc., photographically or graphically. It is also conceivable that the placeholder is designed as a moving image, e.g. B. that the activity is shown in a short video frequency.

Several of the placeholders are displayed on the terminal's screen. In particular, the placeholders are predominantly designed as images. In addition to the images, at least one placeholder can be designed as a character. Alternatively, it is conceivable that all placeholders are designed as images.

They are displayed simultaneously or one after the other. The user can now select several placeholders. To do this, the user makes several user entries. In particular, the user makes one user entry for each selected placeholder. Thus, the individual user entries are generated by selecting a placeholder on the screen.

The user input can e.g. B. by one or more inputs on a keyboard, by touching the screen on a touch-sensitive screen and / or by voice input. The arrangement, in particular the terminal, records the multiple user inputs. As a result, a selection from a plurality of placeholders is determined by the arrangement, in particular by the terminal. The selection thus includes the placeholders that the user has selected. In particular, selection also includes the order in which the user selected the placeholders. According to the invention, the selection includes at least one image.

At least one character is saved for each placeholder in this selection. In other words, each placeholder is assigned at least one character. The assignment can be stored in an electronic memory of the arrangement, in particular in an electronic memory of the terminal. Instead of one character, several characters, i.e. a character string, can be assigned to a placeholder. The character in turn is a letter, a number, a special character or control character from a common character set, in particular ASCII or Unicode. A Unicode character is particularly preferably used as the character.

Another character can be assigned to a placeholder designed as a character.

The arrangement is designed to query the characters that are assigned to the selected placeholders and to form a password from them. When the password is formed, the characters or the character strings especially composed in the order that corresponds to the order of the individual user entries.

Due to this procedure, the user does not have to remember the password with the large number of characters, but only the placeholders and their order. This leads to a comfortable use of the lock arrangement, but in addition to the comfort, for example, also enables children or illiterate people to use it. In addition, there is a decisive advantage in terms of security: depending on the configuration of the lock arrangement, repeated incorrect entry of a password can trigger a corresponding alarm. If such an alarm is triggered too often, this can mean that the alarm is not taken seriously and, as a result, security-relevant events can occur. By using the placeholders, incorrect entries are made as rarely as possible, which means that the alarm is triggered as rarely as possible. Furthermore, the frequent wrong entries on the safe can lead to the irrevocable locking of the lock, whereupon the safe has to be opened by force.

The generated password is sent. The password sent is in turn received and checked. The control involves, in particular, comparing the received password with a stored password. If the password is checked, an actuation command is issued. This actuation command in turn leads to opening or locking of the lock arrangement in the lock arrangement.

Sending the password can be wired or wireless. In particular, the password is generated in a housing or device of the arrangement and received and controlled in another housing or device of the arrangement.

The terminal can be assigned to a user. The terminal device can be designed in such a way that it can be carried by the user and / or held in one hand during use. Furthermore, the terminal can be designed for wireless communication. In particular, the terminal is for wireless communication trained via WLAN, Bluetooth or Near Field Communication (NFC). However, any other wireless communication standard can also be used here. The terminal device is, in particular, a smartphone.

The terminal can in particular comprise a touch-sensitive screen on which the placeholders are displayed. User input can be made by touching the screen. The placeholders can be selected by touching the screen.

It is preferably provided that the characters assigned to the placeholders, in particular the Unicode characters assigned to the placeholders, are invisible to the user. In particular, the characters assigned to the placeholders are not shown on the screen. Thus, an unauthorized viewer cannot find out the characters that are used to form the password. Rather, an unauthorized viewer can only see the selection if he looks over the shoulder of the user. The associated characters, however, are spy-proof.

It can be provided that already selected placeholders are visible on the screen. In particular, the placeholders can be visible on the screen in the order in which the placeholders were selected. The already selected placeholders can be visible during the determination of the selection, in particular during the selection of the further placeholders.

It is preferably provided that the characters assigned to the placeholders, in particular Unicode characters, can be changed by the user. This means that the characters assigned to the placeholders can be changed in a user-specific manner. This change in the characters assigned to the placeholders takes place, for example, by means of appropriate inputs by the user on the terminal's screen. The user can, for example, select a specific placeholder and then enter the at least one associated character on the terminal's screen.

It may be that the characters assigned to the placeholders, in particular Unicode characters, can be changed by the terminal. In this way, the characters assigned to the placeholders can be changed in a terminal-specific manner. For example, an algorithm can be stored in the terminal which changes a predetermined assignment when the computer program product or a part of the computer program product is installed on the terminal.

It is preferably provided that the password can be changed by the user. This means that the password can be changed user-specifically. For example, a biometric feature of the user or a PIN entry of the user is used to generate a user-specific key, by means of which the password, in particular of the terminal, is changed.

It may be that the end device's password can be changed. This means that the password can be changed for specific devices. For example, a key is stored in the terminal with which the password, in particular for the terminal, is changed.

It is thus possible to change the password before sending. The step c) "Forming the password from the queried characters, in particular UNICODE characters, and sending the password" can, for. B. to the effect that a password is first composed of the characters assigned to the placeholders and then changed by means of the user-specific key formed or by means of the key stored in the terminal. The password will then be sent.

The user- or terminal-specific changing of the password increases the security of the process. So an unauthorized viewer who looks over the shoulder of the user can see the selection. However, if the unauthorized viewer gives the selection z. B. on another terminal and if the password is terminal-specific changed, a different password is generated so that the actuation command is not issued. If the unauthorized viewer enters the selection on the same device and will If a user-specific password is changed, a different password is generated and the actuation command is not issued.

It may be that the way in which the password is changed before sending, the user interaction with the terminal is required. For example, the user must be recorded biometrically, enter a PIN or shake the device in order to generate the key with which the password is changed before sending. It is conceivable that the key is stored in the arrangement, in particular in the terminal.

It can be provided that the key is specified when the computer program product is configured. For example, the user only has to shake the terminal once to generate a key. The key generated in this way is then stored in the terminal. When performing step c), the same key is always used in the same terminal. In particular, it is provided that after a synchronization of the password with the lock arrangement and / or a server, the key remains unchanged.

In addition, it is also provided that the user himself can add at least one new placeholder, in particular a new image. In particular, it is conceivable that the user can assign at least one character, in particular a Unicode character, to the newly added placeholder. For example, the user can take a photo with the terminal device, which preferably has a camera, and assign at least one character to this photo. Alternatively, the user can add a new placeholder and the arrangement, in particular the terminal, can independently assign at least one character, in particular a Unicode character, to the newly added placeholder.

In the method it is then provided that the placeholder added by the user himself, in particular the image, is also displayed and can be selected for the user input. It can thus be the case that in step a) at least one placeholder defined by the user himself is displayed for selection.

It is particularly preferably provided that several characters or character strings are stored for the individual placeholder in order to operate different lock arrangements. The multiple characters or strings are different for each lock arrangement. In the course of the process, it is first determined which lock arrangement is to be actuated. This can be done through a user input. Alternatively, the lock arrangement can communicate with the terminal. In this way it can be determined whether the terminal is in the vicinity of a lock arrangement that is to be opened. Since it is preferably provided that different characters or character strings specific to the lock arrangement are stored for the respective placeholder, the appropriate character or the appropriate character chain can be used depending on which lock arrangement is to be operated.

Furthermore, it is preferably provided that the characters assigned to the placeholder and their assignment to the respective placeholder are stored in the terminal. The query of the characters assigned to the placeholder as well as the composition of the queried characters for the password is then also carried out in the terminal.

Alternatively or additionally, it is possible that the characters assigned to the placeholder and the assignment of placeholders and characters are stored in a higher-level server. However, it is provided in particular that the respective character and / or the password assigned to the placeholder is user-specific and / or terminal-specific. This means that depending on the user who is identified via the terminal and / or depending on the individual terminal, a corresponding character is assigned to the placeholder and / or the password obtained is changed by means of a user- or terminal-specific key.

In both cases, both when storing and assigning in the terminal and when storing and assigning in the server, there is the advantage that an unauthorized user will not be able to use the correct images even if the correct images are selected generates the correct password because he is either using the wrong device or is the wrong user.

For example, if the unauthorized user were to observe the authorized user selecting the individual images on his end device, the unauthorized user would not be able to generate the correct password with his own end device or with his own user log-in on the server, and thus not operate the lock assembly. If the unauthorized user were to select the same placeholders, the result would be a completely different password, since no or different characters assigned to the individual placeholders and / or a different key to change the password on the device of the unauthorized user or in the user profile of the unauthorized user are deposited.

As described, either the end device itself or the higher-level server sends the generated password. This sent password is preferably received by the lock arrangement. Correspondingly, the password is then checked in the lock arrangement and, if the check is positive, the actuation command is output.

Alternatively or in addition, it is provided that the password is sent from the terminal to a server. The password is then checked in the server and the actuation command is issued. From the server, in turn, the actuation command is sent, preferably wirelessly, to the lock arrangement.

In particular, the variant is preferred in which the character assigned to the placeholder and its assignment to the placeholder is stored in the terminal, the formation of the password and the sending of the password also taking place in the terminal. The transmission takes place in particular wirelessly. The password can then be received either directly from the lock arrangement or from the server.

Provision is preferably made for the placeholders designed as images to be classified in different categories. These categories are, for example, "Activities", "Animals", "Buildings", "Plants", "Furniture" etc. The placeholders designed as characters can also be divided into different categories, e.g. B. "Numbers," Letters ".

All categories that are stored in the terminal are referred to as the total amount of categories. Several of the placeholders are assigned to at least one category, preferably several categories, particularly preferably each category. In particular, it is provided that the placeholders for composing the password are distributed in several, but not in all categories. Those categories to which a placeholder for the password is assigned form a subset of categories. To operate the lock, the user is preferably shown at least the subset of the categories, in particular only the subset. From this subset, the applicant then selects the corresponding category in which the first placeholder of the selection is located. The user then selects the next category from the subset, in which the second placeholder of the selection is located, and so on.

It is conceivable that the display on the screen is structured in such a way that the category must be selected by the user before the next user entry. Additionally or alternatively, it can be provided that the placeholders of this category are displayed after a category has been selected. In particular, it is provided that after a category has been selected, only placeholders for this category are displayed. Before placeholders for a further category are displayed, the user must first select the further category.

It can be provided that the categories of the subset are not displayed on the screen at the same time. It can be provided that the placeholders of a category are not displayed on the screen at the same time. Rather, the displayed categories and / or the displayed placeholders can be replaced by an input by the user. Entering the User can e.g. B. comprise a swiping motion on a touch-sensitive screen.

For example, it is conceivable that the subset of categories is shown at least partially on the screen and at the same time the placeholders of an already selected category are shown at least partially on the screen.

It can be provided that the display on the screen shows at least the subset of categories after the respective user input, so that the category must be selected by the user before the next user input. The display therefore jumps, in particular automatically, back to the display of the subset of the categories after each user input. This enables the correct placeholders to be selected relatively quickly.

In the context of the invention it is preferably provided that such placeholders are made available for selection so that the user can create a story as a selection. If categories are provided, such categories may be made available so that the user can form a story as a selection. For example, at least one placeholder represents an activity. It may be that at least one placeholder represents a number.

For example, the user remembers the story: "The blue dog goes to the bakery". The categories of the subset are colors, animals, activities, buildings. All other categories, for example plants and furniture, can be at least partially hidden. The user is shown at least, in particular exclusively, the subset. The user then first selects the Colors category and then taps on the image that shows a blue color. The user then selects the Animals category. After selecting the picture which shows a dog, the user selects again from the subset of the categories, etc. In this way the user can relatively quickly select the pictures blue, dog, walking, bakery.

The invention also relates to an arrangement comprising the terminal device described and the lock arrangement described, in particular in a safe or in a door system. The lock arrangement can also be the safe itself include. The terminal is designed in particular to carry out the first two method steps (method steps a and b). These first two process steps are the display of the placeholders on the screen of the terminal and the determination of the selection by recording the user information.

It is preferably provided that the terminal is also designed to carry out the third method step (c). This involves querying the stored characters of the selection assigned to the placeholder and creating the password as well as sending the password.

The lock arrangement is designed in particular for executing the actuation command; so to open or lock the lock assembly. As already described, it is preferably provided that the lock arrangement receives the password, checks it and accordingly itself generates the actuation command.

The invention also includes a computer program, also referred to as a computer program product. The computer program includes commands that cause the arrangement (terminal and lock arrangement) to carry out the method steps described.

The arrangement can also include the server which, according to alternative embodiments, stores the assignment of the characters to the placeholders, composes the password and sends it. If necessary, the server changes the password by means of a key before sending. The key can in particular be stored in the server. The key can be user-specific and / or terminal-specific. In addition, the server can also control the password and issue the actuation command. In the case of the configuration with a server, the arrangement accordingly also includes the server.

• Fig. 1 ein Endgerät zur Durchführung des erfindungsgemäßen Verfahrens mit Anzeige von Kategorien,
• Fig. 2 das Endgerät zur Durchführung des erfindungsgemäßen Verfahrens mit Anzeige von Bildern,
• Fig. 3 eine Türanlage mit Schlossanordnung zur Durchführung des erfindungsgemäßen Verfahrens,
• Fig. 4 einen Tresor mit Schlossanordnung zur Durchführung des erfindungsgemäßen Verfahrens
• Fig. 5 die einzelnen Schritte des erfindungsgemäßen Verfahrens und
• Fig. 6 eine zu Fig.1 und 2 alternative Darstellung auf dem Endgerät zur Durchführung des Verfahrens.

The invention will now be described in more detail on the basis of exemplary embodiments. Show:

• Fig. 1 a terminal for carrying out the method according to the invention with display of categories,
• Fig. 2 the terminal for carrying out the method according to the invention with the display of images,
• Fig. 3 a door system with a lock arrangement for carrying out the method according to the invention,
• Fig. 4 a safe with a lock arrangement for carrying out the method according to the invention
• Fig. 5 the individual steps of the method according to the invention and
• Fig. 6 one to Fig. 1 and 2 alternative display on the terminal device for carrying out the method.

The following is based on the purely schematic Figures 1 to 6 the method according to the invention explained in more detail.

Figs. 1 and 2 show a portable, hand-held terminal 9 designed for wireless communication, in particular a smartphone. The terminal 9 comprises a touch-sensitive screen 10 and a communication module 8 for wireless communication.

According to Fig. 1 a subset 12 of categories 11 is initially displayed to the user on the screen 10. The categories 11 displayed in this example are activities, animals, buildings. After selecting one of the category 11, animals in the example shown, the user sees the representation accordingly Fig. 2 . Here, a plurality of placeholders 13 of the category animals, embodied as images, are displayed on the screen 10 of the terminal device 9. In the example shown, images 13 show a bird, a fish, a bat and a dog. After selecting one of the animals, the user is shown the in Fig. 1 shown Screen shown. The "Activities" category is preferred so that the user can tell a story with the placeholders.

At least one Unicode character is stored in the terminal 9 for each of the placeholders 13. A password is composed in the terminal 9 from the Unicode characters which are assigned to the placeholders 13 selected by the user. In addition, a key is stored in the terminal 9 with which the password can be changed. The Unicode characters assigned to placeholders 13 are not visible to the user. The Unicode characters are not displayed on the screen 13.

Fig. 3 shows a door system 5. This door system 5 comprises a door 6 and a frame 7. A lock arrangement 2 is located in door 6 and frame 7. The lock arrangement 2 can include a lock 3 and / or a counter element 4. The lock 3 is in particular a mortise lock in the door 6. The counter element 4 is, for example, a counter lock or a door opener in the frame 7.

Fig. 4 shows that the lock arrangement 2 with lock 3 can also be used in a safe. The lock arrangement 2 can comprise a lock for locking the vault door. The lock arrangement 2 can additionally or alternatively be a lock for blocking a handle, e.g. B. a wheel to open the vault door.

The lock arrangement 2 also includes a communication module 8 for wireless communication.

The individual method steps of method 1 according to the invention are illustrated in FIG Fig. 5 explained.

According to method step 100, a configuration is preferably initially provided. In this configuration, Unicode characters are assigned to the individual placeholders 13.

Furthermore, in this method step 100, the passwords can be synchronized as part of the configuration. To do this, the user can first generate his password. For this purpose, the user can select placeholders from predefined categories that are to form the selection together. In addition, it is conceivable that the user himself adds placeholders 13 that he himself defines to the categories. For example, in the "Animals" category, a photo of your own pet. In addition, it is conceivable that the user himself introduces defined categories. Is the user z. B. hobby model builder, the user can introduce the category "model cars". From the predefined and / or self-defined categories and / or placeholders, the user now selects those placeholders that he would like to select as user input - always or until the next password change - so that the actuation command can be output. For example, the user looks for the placeholders "1" from the "Numbers" category, "blue" from the "Colors" category, "Dog" from the "Animals" category, "Go" from the "Activities" category and "Bakery" from the "Buildings" category. This tells the story "A blue dog goes to the bakery". The user also stores a key with which the password can be changed before sending. The key can be generated by interaction of the user with the terminal 9. For example, the key is generated by shaking the terminal 9. The key is therefore terminal-specific. Alternatively, the key is generated by a user-specific action, e.g. B. by entering a biometric or PIN. The terminal 9 takes the selected placeholders, e.g. B. "1", "blue", "dog", "go" and "bakery" and asks for the unicode characters assigned to the selected placeholders and stored in the terminal 9, e.g. B. "B1" for the placeholder "1", "15" for the placeholder "blue", "3" for the placeholder "dog", "108" for the placeholder "go" and "A20" for the placeholder "bakery ", and uses it to compose the password in the order of the assigned placeholders, here" B1153108A20 ". This password is now changed using the key. The changed password is stored in the lock arrangement as authorized to issue the actuation command. This completes the synchronization of the passwords.

The user thus determines a specific selection from which the desired password is derived. This password is in turn stored in the lock arrangement 2.

To actuate the lock arrangement, the method begins with method step a). In this case, the placeholders 13 are displayed on the touch-sensitive screen 10 of the terminal 9. Optionally, the categories 11 or the display of the subset 12 can be used to enable the images 13 to be selected conveniently.

In method step b), the selection is then determined by recording the user inputs. The placeholders that have already been selected can be displayed on the screen 10.

Method step c) describes the querying of the stored Unicode characters assigned to the placeholders 13 for the respective placeholder of the selection as well as the assembly of the queried Unicode characters for the password, changing the password using the key and sending the password. Because the Unicode characters assigned to the selected placeholders are not visible on the screen 10, it is not possible for an unauthorized viewer to recognize the password before it is changed. Because the password is changed in a terminal-specific and / or user-specific manner using the key before it is sent, it is not possible to form the same password on another terminal 9 even if the same placeholders are selected.

In the exemplary embodiment shown, according to method step d), the password is received and checked directly by the lock arrangement 2. If the check is positive, the corresponding actuation command for opening or locking the lock arrangement 2 is output in the lock arrangement 2. Alternatively, a server can check the password and issue the actuation command.

Fig. 6 shows a further embodiment of how the categories 11 and the placeholders 13 can be displayed on the screen. The categories 11 and the placeholders 13 of each category 11 are each arranged on the outer circumference of a virtual wheel 15. The virtual wheels 15 are visible at the same time. By virtually turning the wheels 15, the desired category 11 and the desired placeholder 13 of a selected category 11 can be selected. Here, the virtual wheels of the placeholders 13 change, depending on which category 11 has just been selected. For example, only part of the outer circumference of each virtual wheel 15 is shown on the screen 10, so that three categories 11 and three placeholders 13 are displayed in each case. The middle one of the displayed categories 11 and the middle one of the displayed placeholders 13 is the currently selected one. This category 11 or this placeholder 13 can, for. B. give the impression of protruding from the other categories 11 or placeholders 13.

In the lower area of the screen 10, a line 14 is shown in which the placeholders 13 that have already been selected are shown. In Figure 6 the state is shown in which the first category "Numbers" is currently selected. Thus, different numbers are shown as placeholders 13 in the right virtual wheel 15, which displays the placeholders 13 assigned to the selected category 11. The number "1" has already been selected as a placeholder and placed in the first position in line 14. The remaining spaces in line 14 are not yet occupied. Next, the placeholder "blue" will be arranged after the corresponding user input. To this end, the left virtual wheel 15 must first be rotated in such a way that the “colors” category appears in the middle position. Then 15 different colors are displayed on the right virtual wheel to choose from.

By swiping the screen 10, you can scroll through the various categories 11 and placeholders 13. Here, those categories 11 or placeholders 13 can also be made visible that are currently not displayed, such as B. the category "colors". This is currently located in a non-visible position on the outer circumference of the virtual left wheel 15.

As in Figure 6 As shown, categories 11 shown to the user may correspond to categories that do not belong to the subset. For example, in Fig. 6 the "Cars" category is shown, although the selection does not contain placeholder 13 from the "Cars" category.

Claims (15)

Method (1) for actuating a lock arrangement (2), comprising the following method steps: a) displaying placeholders which comprise at least one image (11) on a screen (10) of a terminal (9), b) determining a selection comprising several placeholders by capturing several user entries of placeholders, the selection comprising at least one image, the individual user entries being generated by selecting one of the placeholders (11) on the screen (10), c) Querying at least one character, in particular a Unicode character, which is assigned to a selected placeholder, forming a password from the queried characters, in particular Unicode characters, and sending the password, d) Receiving the password, checking the password and, if the password is checked, issuing an actuation command to open and / or lock the lock arrangement (2). Method according to Claim 1, the terminal device (9) being designed as a portable, hand-held terminal device (9) which is assigned to a user, the terminal device (9) in particular comprising a touch-sensitive screen (10) on which the placeholders (13 ) and can be selected by touching the screen (10). Method according to Claim 1 or 2, the placeholders (13) being displayed on the screen (10), while the Unicode characters assigned to the placeholders (13) are invisible to the user. Method according to one of the preceding claims, wherein the already selected placeholders (13) are visible on the screen (10) during the determination of the selection. Method according to one of the preceding claims, wherein the unicode character assigned to the placeholder and / or the password is changed user-specific and / or device-specific before sending, wherein in particular the password is changed by a user-specific and / or device-specific key. Method according to one of the preceding claims, wherein an interaction of the user with the terminal is required for the manner in which the password is changed before sending. Method according to one of the preceding claims, wherein the Unicode characters and their assignment to the respective placeholder (13) are stored in the terminal (9) and the query of the characters assigned to the placeholder (13) and / or the formation of the password in the terminal (9 ) he follows. Method according to one of the preceding claims, wherein the password is received by the lock arrangement (2) and is controlled in the lock arrangement (2). Method according to one of Claims 1 to 8, wherein the password is received from a server, is checked in the server and the actuation command is sent from the server to the lock arrangement (2). Method according to one of the preceding claims, characterized in that in step a) the user is shown at least placeholders (13) for selection that have been defined by the user himself. Method according to one of the preceding claims, wherein a total amount of categories (11) is provided, each category (11) being assigned several of the placeholders (13), those categories (11) to which a placeholder (13) of the password is assigned , form a subset (12), at least the subset (12) being displayed to the user for actuating the lock arrangement (2). The method according to any one of the preceding claims, wherein the display on the screen (10) is constructed in such a way that before the The next user input the category (11) has to be selected by the user and / or the placeholders (13) of this category, in particular exclusively, being displayed after a category (11) has been selected. Method according to one of the preceding claims, characterized in that such categories (11) and / or such placeholders (13) are made available for selection so that the user can form a story as a selection. Arrangement comprising terminal device (9), which is designed to carry out method steps a) and b), preferably also c), of claim 1 and a lock arrangement (2), designed to carry out the actuation command according to method step d), preferably to carry out the entire process Method step d) according to claim 1, wherein the arrangement is preferably designed to carry out the method according to one of claims 2 to 13. Computer program, comprising instructions which cause the arrangement according to claim 14 to carry out the method steps according to any one of claims 1 to 13.

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