Interesting application for a laser, but why would you need one in that case? It's not like you're trying to shave from a distance, so the edge of the blade, which happens to be straight just like that laser line is the only thing you need to know exactly where you are cutting when placed on your face. That makes it completely pointless unless you can shave with that laser beam. That would be awesome!
When i read your comment i laughed, because THAT ALREADY EXISTS
Found it on amazon when i was helping a friend pick out his next garage door opener and get reviews. her you go! two different versions, thought you might like. only 25 and 18 USD each.
laser guided speakers... so you know when youre in the sweet spot.
laser generated wall clocks so you dont have to take it off the wall to change the time and its impervious to humidity so you could put it in your shower stall and know exactly how late you are for work. Plus it could let you change the size of the clock and come in red or green colors.
A laser guided can of Raid. A few months ago there was a cockroach on my kitchen floor. I could only get about 6 ft. away from it before it took off so a nice laser guide would have been perfect. Instead I had to start the stream to see where it would go and then try to direct it to where the roach was before it went under the stove. I never saw it again but my floor was wet with stinky Raid.