I've used mine as photo ID in a number of situations:

- For work I do at secure data centers: Generally accepted without any issue
- For verification of credit card purchases: Mixed success rate; sometimes accepted, sometimes not. When not accepted, I'll show my driver license, but also give the clerk a friendly lecture on what "government-issued photo ID" means
- For secondary ID in situations where two IDs are required (e.g. large cash withdrawals from a bank): Always accepted without issue

I should note that I basically never drink, so I don't actually buy alcohol. I've therefore never tried using it for age verification.