Fortunately, it looks like US travelers (flying from/within the US) might be spared this. It's just been announced (such timing) that TSA knows a company that has a new electronic device screener ready to roll out to all baggage and checkpoint screening areas.

Foreign airports don't have to buy and install these US devices at all checkpoints and baggage screening areas that handle US-bound or US-overfly flights. Foreign airports are free to continue to use the manual method to power up and verify all electronic devices in checked or carry-on bags.

This is good news for some US airports. Not all airports have much in the way of a place to hang out before security - most people want to clear security before relaxing and killing time for their flights.

I don't know if I've ever seen charging stations pre-security at some of the airports I've flown out of - they're all in the sterile areas. There are a few outlets outside security.