Mobile phone antitheft device and method

Abstract

This invention discloses a cell phone anti-stealing device and a method. The method includes the following steps: carrying out initialized designs to the cell phone including designs of anti-stealing number, cipher cod of anti-stealing device, data ciphered mode, alarm control mode, input mode, alarm information design for unlock cipher. After the initialization, whenever the cell phone is switched on, the internal program will automatically fetch SIM content then to compare it with that in the data memory, if not the same, it asks the user to input the unlock cipher, if it is not correct for several times, the system triggers the alarm device, so the cell phone can't work normally. When it works normally, if it receives the alarm information of the anti-stealing number, the system identifies it and triggers the alarm device, if it's the unlock information, the system unlocks it.

Description

Technical field: [0001] The invention relates to a mobile phone anti-theft device and a mobile phone anti-theft method, which are mainly used in the field of mobile phone anti-theft. Background technique: [0002] Along with popularizing day by day of mobile phone, the phenomenon of theft of mobile phone is also more and more serious, and this urgently needs a kind of simple to operate, highly reliable mobile phone anti-theft device or mobile phone anti-theft method, like this, even if the thief steals mobile phone, also can't use This mobile phone fundamentally reaches the anti-theft function. [0003] Several mobile phone anti-theft methods that have been disclosed at present, their general defect is that they are easy to crack, the application number is: 00101440, anti-mobile phone information theft and online registration alarm method, the defect of this method is: because its data is stored in RAM , the main disadvantage of RAM is: when the battery of the mobile phone ...

AI Technical Summary

Problems solved by technology

[0003] Several mobile phone anti-theft methods that have been disclosed at present, their general defect is that they are easy to crack, the application number is: 00101440, anti-mobile phone information theft and online registration alarm method, the defect of this method is: because its data is stored in RAM , the main disadvantage of RAM is: when the battery of the mobile phone is replaced or removed, the data inside will be lost automatically, so the password set is invalid; The design method of digital mobile phone, although these two methods can achieve anti-theft effect in a certain concept, but because it is a hidden dial anti-theft number, if the owner wants to get back his mobile phone, there is still a certain degree of difficulty , and there is also the defect that can be cracked (the cracking method is shown below); the application number is that the mobile phone anti-theft card 02117718 also has the defect of being cracked, and the above-mentioned anti-theft methods can be cracked by the following methods: if the mobile phone If the SIM card is not replaced or shut down, the anti-theft will be invalid. In addition, if the chip that stores the password is found, the anti-theft method will be invalid.

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