However, if by chance they're sitting in the same room as you, you can send them that picture without needing to ask for their number -- and it's all thanks to AirDrop. Apple introduced AirDrop as ...

As for Apple, there's AirDrop, but that only works from one Apple device to another.

AirDrop is an easy way to quickly send photos, videos, and more between Apple devices, though it can open you up to unwanted content if you don't customize your settings.