It sounds like an easy request to remember - you're very aware of it when you do things like putting on a shirt - but there are other times when it slips your mind, such as for example when you feel like stretching your arms when you yawn!
So here's my solution to stop unwitting accidents...
Step 1: What You'll Need
- Anti-dozing driver alarm aka nap alert (under $3)
- Velcro (pennies)
Step 2: Attach to Shoulder
Attach a square of velcro against the larger part of the device, and a thin strip to the ear piece so that it is attached to your clothing at two places, otherwise it is liable to flop over...
Note that this is just a 1-axis tilt switch, not a 2-axis accelerometer, so it might not alert if you extend your arm sideways, only if you raise it in front of you. But having been using this for a day or two now, it does actually work pretty well. The only time it has alerted by accident was when I was reclining in a Barcalounger, and it was easy enough to just switch off during that time.
The device is indeed buzzing as this picture was being taken.