Since I live in a dorm, there were multiple constraints that I had to work within.
- The design must not limit the functionality of the peephole. Thus, the device must be either transparent, or easily removable.
- It must not modify the peephole in any way.
- The design must be low powered, I don't want to have 50 watts of power pumping into my dorm room.
- And of course, since I am a poor college student, it must be low-cost.