[rogerthat_au]

Drivers License as ID is used at a number of places in Australia including as age proof for venues serving alcohol, for phone connections and widely as a key KYC document. Carrying one less card is certainly welcome to remove the need for a wallet.

[toomanybeersies]

That's great until your phone gets broken or runs out of battery. Personally, I like to keep my phone, wallet, and keys as three separate things.