Google have recently created Plus Codes, a Post Code-esque way to pinpoint where you are on Google Maps (down to 3 meters). The format is a 4 character area code, and 7 character local code.
Meanwhile, what3words has been around for a while but lacks fame. The format is simply 3 words: daring.lion.race and can be translated for non-english (though I’m not sure if it is direct translation). It is also accurate to 3 meters.
Think either of these could pick up in the future?