(Software introduction:?? This notebook computer anti-theft alarm software called "Laptop Beauty Anti-theft Guard", the English name LaptopAlarm thinks the comparison is effective, as long as your laptop is moved by others, it will be like a security door or super anti-theft A very loud alarm is issued like the detection door, even if your laptop is silent, she will sound, and the maximum volume is turned on so that you or the people around you can hear it. After pressing the "Guard" button, then you can leave your laptop with confidence, so what are the conditions for it to trigger the alarm? 1. Disconnect the external power supply 2. Shut down or log out 3. Unplug the usb device 4. Move the mouse or touch the trackpad?? It can be seen that the thinking should still be relatively comprehensive. Although everyone will not use peripherals such as power supplies in most public places, but in the university dormitory everyone believes that everyone It's a laptop that's plugged in. And generally speaking, if you want to steal a laptop, you must close the lid. The usual settings are to close the lid to publish, sleep or something, and it will also be reported at this time. Of course, if you unlock it, just use the keyboard, don't touch the touchpad or mouse! Otherwise, you must scare yourself...? For everyone's different needs, three versions are packaged. "Shadow version" means to hide the password input window, directly use the keyboard to enter the password and press the Enter key to cancel the alarm!)