Computer Timed Health Warning
The idea is making a tool which will automatically ring/beeps/anything to distract the user after a timed period. The beep is to remind the person using the computer to stop using it for a while (say 5 minutes) and rest his/her eyes and take a walk around (stops back aches). If the person stands (clear the sensor in the seat) then it will stop ringging, but if it's before five minutes and the person sits again, it will ring until a LED says it's OK to sit (after 5 minutes). Maybe this tool can use the computer USB power supply (+5VDC) to power this tool and maybe having a sensor in the chair so this tool will know when is the user sitting and standing.
Any comments, ideas to add, or inspiration for this project?