ITW: ditto

In this inaugural Interesting Thing of the Week (ITW), we present 'ditto':

Pros: Small, discreet, functional. Long battery life and 'no biggie' if you were ever to lose it. Not too complicated for folks less tech savvy.

Cons: Wearables are the new THING and Apple Watch is getting set to overtake the market come next February with features that may make the ditto unnecessary. Still a little too bulky?

Coming from the Architecture industry, we remember the 'ditto machine' ! Do you remember those blue copies?