Beyond just connecting us through voice and text, our mobile phone numbers are quickly becoming our identities and our wallets. Now they can also receive physical gifts! Well, kind of — Giiv, a Los Angeles-based year-old startup, allows users to send each other virtual gift cards to stores like Amazon, Macy’s and Krispy Kreme. The gift vouchers arrive in the form of a text message with a code that can be used in person or online.