Tap+Send is more like Tap+Hold+Send.

[rockstarzzz]

Only realised it now. May be everyone else knows about it. But I tried Tap+Send with my brother's Lumia 920 only to find out that you can just tap and send a photo. You tap, you hold till the whole transfer is done, send!

Felt like bluetooth technology taken 1 step back where you physically put devices together! Only plus point was, amazingly fast transfer speed.