I found a thread from 2011 but this is a different system. This interests me because the cans are reactive plus you can put them at different levels in different locations in the house.
Plus I've developed the capability to quickly forget where they I put them
Looks like about $150 (also need the proper caliber laser cartridge) with free shipping from Amazon. What sayeth the herd ?
http://www.amazon.com/LaserLyte-Tip-...laserlyte+cans