What comes after USB charging? Inductive charging.
Qi is an inductive power standard that seems like it might start to take off. Compatible devices can use it to charge by simply coming into contact with a charger, such as a charging mat. While the 2013 Nexus 7 has it built in, the 2012 Nexus 7 does not.
I still wonder about the safety, but it would definitely be convenient! It’s exciting to think that newer devices will start to build in this technology.