Which document is generally acceptable as proof of age?

Generally acceptable proof of age includes a valid, unexpired, government-issued photo ID showing date of birth — such as a driver's license, state-issued ID card, military ID, or passport. Documents that are not acceptable typically include photocopies, IDs without a date of birth or photo (like many school IDs), expired IDs (depending on jurisdiction), and non-photo documents like credit cards. Acceptable forms can vary slightly by state, so servers should know what their jurisdiction and employer accept. Using only acceptable documents protects against illegal sales.