CN1220128C - Intelligent secret keyboard with key values being changed randomly - Google Patents
Intelligent secret keyboard with key values being changed randomly Download PDFInfo
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- CN1220128C CN1220128C CN 03110939 CN03110939A CN1220128C CN 1220128 C CN1220128 C CN 1220128C CN 03110939 CN03110939 CN 03110939 CN 03110939 A CN03110939 A CN 03110939A CN 1220128 C CN1220128 C CN 1220128C
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Abstract
The present invention relates to an electronic technique, particularly to an intelligent secrecy keyboard with key values changed at random. The present invention belongs to the field of computer equipment. The present invention is characterized in that the display positions of N key values of N key positions (N represents the quantity of partial keys or all keys) on the keyboard are changed at random; the security and a right of privacy for the data input by a user can be ensured to be the maximum, and the stealing of the input data can be prevented. The intelligent secrecy keyboard with key values changed at random can be widely applied to the financial places of a bank, a stock exchange, a cash machine, an emporium, etc. and the equipment needing cipher input, such as a cipher lock, etc. The intelligent secrecy keyboard with key values changed at random of the present invention has a wide market prospect.
Description
Technical field
The invention belongs to the computer equipment field, relate to electronic technology, specially refer to the changed randomly intelligent privacy keyboard of key assignments.
Background technology
At present, keyboard has become a kind of most important computer external input equipment.It not only can finish normal literal input, and as a kind of cipher input, has been widely used in fields of society, as: financial fields such as bank, stock market.
Yet as cipher input, the confidentiality of existing keyboard is relatively poor.Its main cause is that the key assignments of each key position of keyboard fixes, and such as general employed numeric keypad, the arrangement position of its numeral " 0-9 " the order whole world is unified, as Fig. 1.Such result is, the user is when the input password, and some prepared observers can analyze the password or the data of user's input by observing the user to the operation of each key position on the keyboard.Therefore, the stolen case of user's password is of common occurrence.Existing keyboard still can not change this situation by adding protective cover.Simultaneously, because the special circumstances of China, when the intensive occasion of bank, market or other personnel is carried out the password input, be difficult to guarantee effective secret distance, user's the right of privacy and property are subjected to great threat, impel quite a few people to be unwilling to use these class methods to conclude the business, influenced normal financial order greatly.
Therefore, study a kind of method for designing of new-type keyboard, can prevent financial crime, guarantee normal financial order, crucial social benefit and economic benefit are arranged.
The patent No. is that 02235050.0 Chinese utility model patent discloses a kind of " dynamically privacy keyboard ", this keyboard mainly is to constitute numerical key by a plurality of LED charactrons, and the represented numeral of each numerical key is dynamic change, make the user when the input password, be not easy to be spied on and steal by other people.
But with regard to cryptosecurity, this scheme remains incomplete.Prepared observer no doubt can not snatch password to the operation of each key position on the keyboard by observing the user merely, but he also only needs many observations again, keyboard layout when promptly observing the user and importing.Because number has only 0-9 to amount to ten, the key position also has only ten, in fact corresponding one 9 bit digital of each keyboard layout (need not remember by last position, because preceding 9 the tenth of definite backs can directly be released), for the stronger people of memory capability, remember that one 9 bit digital is not so difficult, in fact, it only is equivalent to remember a phone number.
And at present on China and other places, avoid other people to observe keyboard layout the covering of keyboard top fully and be difficult to accomplish.Even local key assignments is covered, because ten its permutation and combination negligible amounts of numeral only, can be easy to infer the arrangement that the covering part from the arrangement of the key position that is exposed to the outside.
Therefore, still need further to improve the security of keyboard input.
Summary of the invention
The objective of the invention is: a kind of changed randomly intelligent precise keyboard of key assignments that can further improve keyboard input confidentiality as required is provided.
The present invention realizes that the changed randomly intelligent privacy keyboard of the key assignments of foregoing invention purpose comprises:
At least N+M button, the quantity of the key assignments that the N representative is to be imported, M represents redundant bond number amount; Wherein each button comprises the importation of display part that is used for the keyboard key-position of arbitrary key position key assignments on the dynamic display keyboard and the keyboard that is used to import again;
The processing section of button input, the key assignments that is used for being imported converts computing machine or the needed code system of other peripherals to;
The output interface part is used for sending the key assignments of input to computing machine or other peripherals according to required electric interfaces and communications protocol;
Program actuator or other digital-to-analog circuit are used for: a fixing keyboard physical location is distributed in each the key position to the button of N+M on the keyboard, and each key assignments is dynamically shown on its pairing key position.
The changed randomly intelligent privacy keyboard of described key assignments also can comprise following improvement:
Be added with protective cover outward.
Outside a described N+M button, also be provided with " cancellation " key, " affirmation " key and independent " beginning " key.
One of following display device of dynamic each key position key assignments of display keyboard is adopted in the display part of described keyboard key-position: LCD, CRT monitor, charactron; Described key input part is selected transparent push or transparent keyboard for use.
Perhaps, the display part of described keyboard key-position and key input part adopt the equipment that two functions are combined, and the described equipment that two functions are combined is can display graphics and digital touching-type monitor.
The secret input method of described keyboard comprises:
(1) for the key position of the button of N+M on the keyboard, the step of a fixing keyboard physical location is distributed in each key position; Wherein N represents the quantity of key assignments to be imported, and M represents redundant bond number amount;
(2) with N key assignments random alignment and step of selecting one of arrangement mode to show on N+M key position;
(3) receive user's button input, and the step of handling by the current pairing key assignments in each key position.
This method can also comprise following improvement:
After new key assignments of each generation puts in order, the program actuator or the digital-to-analog circuit of keyboard directly adopt, perhaps putting in order with previous key assignments compares, and puts in order just employing then until producing one with previous different key assignments.
During data, after whenever pressing one-touch, just change putting in order of a key assignments in input, perhaps be chosen in to press several times and change putting in order of a key assignments behind the button, or before the input data are finished, do not change.
After receiving " beginning " key, carry out once the program actuator of keyboard or digital-to-analog circuit to major general's above-mentioned steps (2), (3) at every turn.
The invention has the beneficial effects as follows: owing to set up at least one redundant key, make the arrangement of key assignments on keyboard disordering more, memory capacitance is multiplied, and the onlooker remembers that the possibility of keyboard layout has significantly reduced, thereby has improved the security of keyboard password input greatly.Though redundant key is display digit not, because it has taken a position, and its position also changes, and the onlooker must also will remember the position of redundant key when remembering array.Show that according to psychological study people's ratio of common memory is easier to remember 7 bit digital, its memory difficulty suddenly increased when figure place increased; Though memory people preferably can be remembered numeral more than 7, exist too when figure place memory effect this phenomenon that suddenly descends during above a certain value.
In addition, owing to added protective cover, make that some or all of key position is covered, the possibility that makes the observer steal keyboard layout is further lost.Though prior art also can add protective cover, the shortcoming of protective cover be difficult in any direction, any angle hides keyboard comprehensively, always have situation about exposing the keyboard part and occur.And when expose the keyboard part, the layout of residue keyboard just exist be pushed the possibility measuring (this moment, subject matter was not the problem of memory capacitance because what expose is minority, more easy note; Avoid inferring or increase the difficulty of inferring and then become subject matter), at this moment, the keyboard figure place how much be unique factor that difficulty is inferred in decision.According to reckoning, these 10 numerals of 0-9 have 3628800 kinds of arrangement modes, if increase redundant key, after increasing by two redundant keys, arrangement mode then increases by 475372800 kinds, has increased more than 4.7 hundred million kind of arranged distribution mode, and being only has more than 100 times of 10 numerical key arrangement modes.
Moreover owing to increased " beginning " key, after pressing " beginning " key, key assignments all rearranges at every turn, thereby its keyboard layout is different from the user of its front certainly when guaranteeing that each user uses, and has further stopped up leak.So far, all factors that may cause the password vision to reveal are all dealt carefully with by the present invention.
Description of drawings
Fig. 1 is the keyboard synoptic diagram that the key position key assignments of existing numeric keypad puts in order.
Fig. 2 is the wherein a kind of keyboard synoptic diagram that puts in order after the key assignments of process digital-to-analog circuit randomly changing figure case puts in order.
Fig. 3 is 10 key assignments at a kind of arrangement mode that has on totally 12 key positions of 2 redundant key positions.(1) and (2) is two redundant keys among the figure, is used for increasing the arrangement mode of button.
Fig. 4 is 10 key assignments at the another kind of arrangement mode that has on totally 12 key positions of 2 redundant key positions, and (1) and (2) is two redundant key positions among the figure
Embodiment
According to top description, the present invention relates to the design of following aspect:
One, the design of the importation of the key assignments display part of keyboard key-position and keyboard;
Two, to the design of the processing section of button input;
Three, the design of output interface part;
Four, the order that the display position of the key assignments of keyboard N (N represent keyboard portion or whole numbers of buttons) button is arranged is carried out the function of random variation, the design of realization changed randomly intelligent privacy keyboard of key assignments and the secret input method of keyboard.
1, the design of the importation of the key assignments display part of keyboard key-position and keyboard can be adopted the dynamically display device of each key position key assignments of display keyboard, such as other display devices such as LCD, CRT monitor, charactrons; Key assignments and button that key input part can be selected for use devices such as transparent push or transparent keyboard to cooperate and finish dynamic each button of display keyboard are imported two functions; Also can select the equipment that two functions are combined for use, such as: directly employing can be imported two functions with key assignments demonstration and keyboard that the touching-type monitor of numeral is finished keyboard by display graphics.
2, to the design of the processing section of button input, finish the key assignments that to be imported and convert computing machine or the needed code system of other peripherals to,, and finish processing capacities such as keyboard goes to tremble such as ASCII character or binary-coded decimal.
3, the design of output interface part, finish will input key assignments send computing machine or other peripherals to according to required electric interfaces and communications protocol, as the RS232 interface etc.
4, the order of the display position arrangement of the key assignments of keyboard N (N represent keyboard portion or whole numbers of buttons) button is carried out the function of random variation, realize the design of changed randomly intelligent privacy keyboard of key assignments and the secret input method of keyboard, be to finish this function, and N key assignments shown by program actuator or other digital-to-analog circuit.In this processing section, comprise following subfunction:
A) for the key position of the button of N on the keyboard, each key position is selected at random to the key assignments of first button after distributing a fixing keyboard physical location, just selects a key assignments as this button from N key assignments at random; Then, the key assignments of second button is selected at random, just from N-1 remaining key assignments, selected a key assignments at random as this button; The rest may be inferred, selects the key assignments of 1 remaining key assignments as this key until N button.As can be seen, this is the arrangement problems of a typical formation in the probability field, and its N key-value pair answers N the full arrangement of key bit position just to have
Kind.Here it is carries out random alignment to N key assignments formation, a kind of with in the full arrangement mode that obtains this N key assignments.
In order to finish this function, also have following two kinds of methods.A kind ofly be:, at first select a position at random as this key assignments from N key position from first key assignments of N key assignments; Then, second key assignments selected the position of a key position as this key assignments at random from N-1 remaining key position; And the like, select the position of last remaining key position until N key assignments as this key assignments, just a kind of with in the full arrangement mode that obtains a N key position of random alignment carried out in N key position formation, and with N key assignments formation and the formation of key position according to by left-to-right or by the order one by one corresponding demonstration of the right side to a left side, its principle is just the same with top method.
Another kind method is also similar: be exactly the arrangement of simultaneously N key position and N key assignments being carried out formation, and two formations that will obtain allow each key position directly show the key assignments that it is corresponding in N key assignments formation according to by left-to-right or corresponding one by one to the order on a left side by the right side; Vice versa, allows each key assignments in N the key assignments formation directly be presented on the key bits corresponding.Analyze a little, above-mentioned three kinds of methods as can be seen just, its principle is in full accord, and the function of being finished is also consistent, finishes the formation arrangement of N key-value pair being answered N key position exactly.
Be example below with the numeric keypad to the explanation that makes an explanation of these three methods.Earlier the physical location of 10 figure cases on keyboard being fixed up, be the physical location of these 10 buttons with the position of " 0-9 " key of traditional numeric keypad just here, and each key position is just represented with digital " 0-9 ", as Fig. 1.Arrange with first method: at first, " 0 " number key position is selected one totally 10 key assignments at random from " 0-9 ", supposes to select key assignments " 2 " here, and key assignments " 2 " is removed from the key assignments formation; Then, " 1 " number key position is selected in remaining 9 key assignments at random, supposes to have selected key assignments " 8 " here, and key assignments " 8 " is removed from the key assignments formation; The rest may be inferred, and " 2 " number key has been selected key assignments " 6 ", " 3 ", " 9 ", " 5 ", " 1 ", " 0 ", " 4 " respectively at random to " 8 " number key; Select last remaining key assignments " 7 " until " 9 " number key.Be equivalent to 10 key assignments " 0-9 " are carried out random alignment, this puts in order to have obtained " 2863951047 ", just these key assignments are put in order according to this then and and these 10 key bit positions " 0-9 " correspondence that puts in order, be presented at respectively on the physical location of key position " 0-9 ", as Fig. 2.
For second method, reason is just the same: promptly at first to key assignments " 0 ", select at random from 10 key positions, hypothesis has been selected key position " 7 " here, and key position " 7 " are got rid of from the formation of key position; Be key assignments " 1 " then, from 9 remaining key positions, select at random that hypothesis has been selected key position " 6 " here; The rest may be inferred, key assignments " 2-8 ", and then hypothesis has been selected key position " 0 ", " 3 ", " 8 ", " 5 ", " 2 ", " 9 ", " 1 " respectively at random; Then select remaining key position " 4 " until key assignments " 9 ", obtained " 7603852914 " this arrangement, and key assignments is presented at respectively on the key position " 7603852914 ", as Fig. 2 from " 0-9 ".
For the third method, in fact with preceding two kinds also just the same: the key position of " 0-9 " 10 buttons is produced a formation at random arrange, the key position that produces of hypothesis is arranged as " 7456893210 " here; Also produce a formation at random for " 0-9 " 10 key assignments and arrange, be assumed to be " 0951473682 " here; Then with two formations according to by left-to-right or corresponding one by one to the order on a left side by the right side, select here by left-to-right order, what that is to say that " 7 " number key position shows is key assignments " 0 ", otherwise, key assignments " 0 " shows that in " 7 " number key position the rest may be inferred, display result such as Fig. 2.
By above-mentioned example, as can be seen, reason is just the same in fact for these three kinds of methods, and its result is also in full accord.Therefore, can select for use wherein a kind ofly arbitrarily, finish the function that changes button value display position on the keyboard.By to numerical key " 0-9 " key assignments of totally 10 key positions arrange, have the arrangement mode of 3628800 kinds of key assignments.Therefore, the key position that keyboard need change is many more, and its arrangement mode is also many more, and confidentiality is also just strong more.
B) under special circumstances, can finish more arrangement mode by increasing some redundant key positions, to reach higher confidentiality, as Fig. 3 and Fig. 4.In Fig. 3, increase by two redundant key positions 1,2, made the arrangement mode of 10 key assignments on 12 key positions increase
Kind, improved privacy degrees greatly.Therefore, behind M redundant key position of increase, total for the arrangement mode of N key assignments on N+M key position
Kind, if count " null value " of M redundant key in this example in, then have
Kind, (referring to as Fig. 3 and Fig. 4, wherein N=10, M=2) reached the purpose of further raising confidentiality.
C) in addition, for the confidentiality that key assignments on the keyboard puts in order, a multifunction key or independent button need be set on each key position, such as " beginning " key.When the user brings into use keyboard, need press " beginning " key earlier, at this moment the program actuator of keyboard or digital-to-analog circuit will utilize top a) one of described three methods, finish the change that puts in order of each key assignments, and show on each key position.By the time after the user pressed " determining " key or " cancellation " key, the program actuator of keyboard or digital-to-analog circuit carried out randomly changing to putting in order of key assignments once more, the confidentiality that puts in order with the key assignments that guarantees keyboard.
D) at function c) in, after new key assignments of each generation puts in order, the program actuator of keyboard or digital-to-analog circuit can directly adopt, perhaps put in order or even a preceding x key assignments puts in order and compares with previous key assignments, put in order with the individual different key assignments of previous or even preceding x until producing one, and show for the user and use.
E) when the user imports, can be chosen in and just change putting in order of a key assignments after the user whenever presses one-touch, also can be chosen in and change putting in order of a key assignments after pressing button several times, or before user input data is finished, not change.Certainly, after putting in order of key assignments changed, put in order for new key assignments and will carry out function d) processing.
In sum, changed randomly intelligent privacy keyboard of key assignments and the secret input method of keyboard can guarantee to input the confidentiality of password and protection user's the right of privacy to greatest extent.
By change, improved the confidentiality of keyboard greatly to the key assignments of each key position of keyboard.Because the key assignments of present each key position of keyboard is fixed, therefore the observer can obtain the physical location of operator each operated key position on keyboard by identification importer's input hand shape, and can finally obtain user's input password according to the key assignments of each key position on this keyboard.And the present invention is directly by changing the key assignments of each key position on the keyboard, and guarantees that can produce a kind of new key assignments when the importer brings into use puts in order at every turn, and use finish the back automatically change become another kind and put in order.Therefore, even the observer can obtain importer's the physical location to the key position of keyboard operation by identification importer's input hand shape, also can't obtain real input password, because the observer can't determine the key assignments of this key position.Because the keyboard of 10 numerical keys of common " 0-9 ", just have the arrangement mode of 3628800 kinds of key assignments, can also increase the arrangement mode of key position key assignments by the mode that increases redundant key position, to reach higher secret purpose.The present invention also can be by adding protective cover mode with the confidentiality of protecting password to greatest extent and protection importer's the right of privacy.
Therefore, the present invention can be widely used in the place that bank, cash machine, stock exchange, market etc. need the input passwords, can also be applied to special privacy device simultaneously, as cipher input of coded lock or the like.The present invention not only has very vast market prospect, and can protect normal financial order, and can play purposes such as preventing finance, criminal offense.
Below in conjunction with accompanying drawing, the employing touch type liquid crystal display finishes the demonstration of keyboard key assignments and the input function of key position is that example further specifies.
Step 1.
Utilize single-chip microcomputer to finish initialization, on display, demonstrate the key arrangement of conventional digital " 0-9 " key LCD, and " beginning ", " determining ", " cancellation " three function keys, as Fig. 1.The function of " beginning " key is to allow inner digital-to-analog circuit produce a kind of with traditional button value arrange different key assignments arrangements.The function of " determining " key is after user input is finished and determined that input is correct, presses this once end of input of key representative, and single-chip microcomputer receives to be finished after this instruction simultaneously to definite operation of importing password with to the work that rearranges demonstration of key assignments formation.The function of " cancellation " key is, after the user pressed this key, single-chip microcomputer received the information of a cancellation of back output, sends to computing machine or other Cipher Processing equipment, and cancelling current Password Operations, and formation rearranges, shows to key assignments.In this example, only to " 0-9 " key assignments of totally 10 numerical keys arrange, and after the user finishes input, keyboard is selected 10 key assignments are put in order according to traditional key assignments and is shown on keyboard, as Fig. 1.
Step 2.
Scanning " beginning " key, have only this key to be pressed after, keyboard is just started working.After this key is pressed, single-chip microcomputer at first will carry out in the technical solution of the present invention function a) and function d), here the key assignments that produces is at random put in order and compare (see figure 1), to obtain the arrangement different, as Fig. 2 with putting in order of traditional key assignments with traditional putting in order.
Step 3.
Single-chip microcomputer begins to scan each figure case and " determining " key and " cancellation " key.When the user operated, single-chip microcomputer sent to computing machine or other treatment facility with the key assignments of each key position that the user presses.Up to user's input " determining " key or " cancellation " key, the key assignments on the keyboard puts in order and remains unchanged.
Step 4.
When user's input " determining " key, single-chip microcomputer to the key assignments of computing machine or miscellaneous equipment transmission " determining " key, was arranged the key assignments of each key position on the keyboard before this then again, reverted to traditional arrangement mode, as Fig. 1.
Step 5.
If the user imports " cancellation " key, single-chip microcomputer then to computing machine or miscellaneous equipment send should " cancellation " key key assignments, and keyboard reverted to traditional key assignments put in order, wait for the beginning of next time importing.
Claims (5)
1, the changed randomly intelligent privacy keyboard of a kind of key assignments is characterized in that comprising:
At least N+M button, the quantity of the key assignments that the N representative is to be imported, M represents redundant bond number amount; Wherein each button comprises the importation of display part that is used for the keyboard key-position of arbitrary key position key assignments on the dynamic display keyboard and the keyboard that is used to import again;
The processing section of button input, the key assignments that is used for being imported converts computing machine or the needed code system of other peripherals to;
The output interface part is used for sending the key assignments of input to computing machine or other peripherals according to required electric interfaces and communications protocol;
Program actuator or other digital-to-analog circuit are used for: a fixing keyboard physical location is distributed in each the key position to the button of N+M on the keyboard, and each key assignments is dynamically shown on the key position.
2, the changed randomly intelligent privacy keyboard of key assignments as claimed in claim 1 is characterized in that: be added with protective cover outward.
3, the changed randomly intelligent privacy keyboard of key assignments as claimed in claim 1 is characterized in that: also be provided with " cancellation " key, " affirmation " key and independent " beginning " key.
4, the changed randomly intelligent privacy keyboard of key assignments as claimed in claim 1 is characterized in that: one of following display device of dynamic each key position key assignments of display keyboard is adopted in the display part of described keyboard key-position: LCD, CRT monitor, charactron; Described key input part is selected transparent push or transparent keyboard for use.
5, the changed randomly intelligent privacy keyboard of key assignments as claimed in claim 1, it is characterized in that: the display part of described keyboard key-position and key input part adopt the equipment that two functions are combined, and the described equipment that two functions are combined is can display graphics and digital touching-type monitor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110939 CN1220128C (en) | 2003-01-22 | 2003-01-22 | Intelligent secret keyboard with key values being changed randomly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110939 CN1220128C (en) | 2003-01-22 | 2003-01-22 | Intelligent secret keyboard with key values being changed randomly |
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| CN1431575A CN1431575A (en) | 2003-07-23 |
| CN1220128C true CN1220128C (en) | 2005-09-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571898B (en) * | 2008-04-28 | 2012-01-25 | 鸿富锦精密工业（深圳）有限公司 | Computer keyboard |
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| CN101183941B (en) * | 2007-08-03 | 2011-03-09 | 廖睿 | Random concealed inquiry type cipher authentication technique |
| CN101599770B (en) * | 2008-06-03 | 2013-10-02 | 深圳长城开发科技股份有限公司 | Keyboard and keyboard checking method |
| CN101667065A (en) * | 2008-09-03 | 2010-03-10 | 康佳集团股份有限公司 | Key position self-definition method and computer keyboard |
| CN101442410B (en) * | 2008-12-09 | 2011-09-14 | 深圳市戴文科技有限公司 | Method and apparatus for generating dynamic cipher, and application system containing the apparatus |
| US8364601B2 (en) * | 2008-12-31 | 2013-01-29 | Intel Corporation | Methods and systems to directly render an image and correlate corresponding user input in a secure memory domain |
| CN101882188B (en) * | 2010-06-07 | 2012-11-07 | 天地融科技股份有限公司 | Method and device for enhancing data input security of electronic signature tool |
| CN103412653A (en) * | 2013-08-27 | 2013-11-27 | 邓锡银 | Numeric keyboard capable of randomly changing distribution sequence of numeric keys |
| CN105094355B (en) * | 2014-04-29 | 2018-03-27 | 联发科技（新加坡）私人有限公司 | Input method and related electronic device |
| CN105022494A (en) * | 2014-04-30 | 2015-11-04 | 虹映科技股份有限公司 | Safe input method and system of virtual keyboard |
| CN104091103A (en) * | 2014-07-03 | 2014-10-08 | 南昌欧菲生物识别技术有限公司 | Fingerprint and password combined type verification method and device thereof |
| CN110908586B (en) | 2015-02-16 | 2024-07-09 | 华为技术有限公司 | Keyboard display method and device and terminal equipment |
| TWI561716B (en) * | 2015-09-18 | 2016-12-11 | Taiwan Fu Hsing Ind Co Ltd | Input authentication method, input authentication system and lock with input authentication system |
| CN107092839A (en) * | 2016-02-17 | 2017-08-25 | 深圳市维申斯科技有限公司 | The antitheft input method of code keypad based on random diastema password |
| CN112198973B (en) * | 2016-04-06 | 2024-06-25 | 创新先进技术有限公司 | Method and device for changing correspondence between keys and characters |
| CN107203282A (en) * | 2017-06-27 | 2017-09-26 | 厦门大学嘉庚学院 | The cipher-code input method encoded based on UNICODE |
| CN108831009A (en) * | 2018-08-24 | 2018-11-16 | 深圳合纵富科技有限公司 | A kind of financial level security password input unit |
| US11128636B1 (en) | 2020-05-13 | 2021-09-21 | Science House LLC | Systems, methods, and apparatus for enhanced headsets |
| CN113094695B (en) * | 2021-03-29 | 2023-09-26 | 盛林妹 | Authentication method, equipment for realizing authentication and intelligent lock |
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2003
- 2003-01-22 CN CN 03110939 patent/CN1220128C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571898B (en) * | 2008-04-28 | 2012-01-25 | 鸿富锦精密工业（深圳）有限公司 | Computer keyboard |
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| Publication number | Publication date |
|---|---|
| CN1431575A (en) | 2003-07-23 |
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