very interesting idea. for one thing, as you said before it is a 50-50 choice, so in my opinion those kinds of tricks are very eh, because it could always just be a magicians force. Another thing that i would like it add is that pills aren't' very normal to be carrying around. A magician carries around cards and coins, sometimes pens, keys and paper for street magic, but it will look very odd to have somebody walk up to you with a random pill case. Respectably, its a good start and an interesting idea but i dont think this is a winner