I think that you would need to look at who the issuing authority is - is it the city government or another non-government group, what the standards for obtaining the ID are (what documents are required, what is the process for obtaining the card, what type of verification is done to prevent fraud, etc), and what type of forgery safeguards are contained on the ID (are there holograms - etc that would make it hard to duplicate). If there is more than one city in your market area issuing ID's, I think you would have to do this for each one, make your decisions based on your comfort level that the ID is accurate, and document which ID's are acceptable and which are not.
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