Corrector of position USB

I admit - I do not have the best position while use the computer. Perhaps this accessory stranger makes with that my mother stops of pentelhar, crying out: “he feels yourself right”. The USB Vision and Posture Reminder (27 US$ - R$ 52) alert when you he will be very next to the monitor. The ideal distancia is of 30 60cm, therefore if you not to correct its position in 15 seconds, the device will emit a noise. It folloies a clip and adhesives to seat in the top of its monitor