Abstract: Disclosed is a method for protecting data information of an electronic device, comprising the following steps: 1) performing power-on detection on an electronic device of which production and installation are completed, detecting the stray capacitance of a signal line thereof, and recording same as a standard value of the signal line; 2) during a power-on operation, monitoring the stray capacitance of the signal line; 3) comparing the monitored capacitance value with the standard value, and entering step 4) when exceeding the set threshold value, otherwise entering step 2); and 4) erasing significant data in the electronic device. The method uses the manner of monitoring the stray capacitance to monitor the contact of outside foreign matter with the signal line, guarantees the security of data in the electronic device, and has the characteristics that the implementation process is simple and easy, safe and reliable, and the cost is low.

Abstract: The present invention discloses a safety protection device of an electronic device touch screen including a detection module, a control processing module and a self-destroying/alarming execution module, wherein the detection module is used for applying excitation signals on an electrical pin of the touch screen and detecting corresponding electrical characteristic value to serve as characteristic information, and the control processing module is used for receiving the characteristic information and judging whether the characteristic information is in consistency with prestored standard characteristic information, controlling normal working of the electronic device if the result of judgment is yes and controlling the electronic device to stop working and enabling the self-destroying/alarming execution module to carry out actions of self information destroying/alarming transmission if not. The device of the present invention can greatly improve safety performance of electronic device.

Abstract: Disclosed is a method for protecting data information of an electronic device, comprising the following steps: 1) performing power-on detection on an electronic device of which production and installation are completed, detecting the stray capacitance of a signal line thereof, and recording same as a standard value of the signal line; 2) during a power-on operation, monitoring the stray capacitance of the signal line; 3) comparing the monitored capacitance value with the standard value, and entering step 4) when exceeding the set threshold value, otherwise entering step 2); and 4) erasing significant data in the electronic device. The method uses the manner of monitoring the stray capacitance to monitor the contact of outside foreign matter with the signal line, guarantees the security of data in the electronic device, and has the characteristics that the implementation process is simple and easy, safe and reliable, and the cost is low.

Abstract: The present invention discloses a safety protection device of an electronic device touch screen including a detection module, a control processing module and a self-destroying/alarming execution module, wherein the detection module is used for applying excitation signals on an electrical pin of the touch screen and detecting corresponding electrical characteristic value to serve as characteristic information, and the control processing module is used for receiving the characteristic information and judging whether the characteristic information is in consistency with prestored standard characteristic information, controlling normal working of the electronic device if the result of judgment is yes and controlling the electronic device to stop working and enabling the self-destroying/alarming execution module to carry out actions of self information destroying/alarming transmission if not. The device of the present invention can greatly improve safety performance of electronic device.