So y'all remember MSN, right? Well, my idea is adding nudging to conversations - so if you're, for example, in the tragic situation where you've forgotten your keys and your girlfriend is the only one with another key, you can nudge her so she notices her phone and dashes straight home to let you in. Particularly useful if:
~It's winter, and it's too cold to have your hands out for long.
~You need or want to contact someone, but feel it's a bit extreme (or the wrong moment) to phone them.

I think just a few, small repeated buzzes on the other person's phone would be a great idea :)

Thanks for listening! <3