Pretty much, but if you get caught up in it you're looking at a 5yr prison sentence and a fine of up to $250,000. Always make sure to check their paperwork and if anything is suspect have an office person call to verify it.
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Would you like fries with th... I mean, your milk in a bag?
You have to have a valid driver's license from a tax free state or it's considered fraud. As a cashier you can't just tap the sales tax button. It's like pressing the over 21 button at self check. It could get you fired or give you a misdemeanor. It's like making your own money it's a crime.