Is the plural form of ID spelled ID's or ID? [duplicate]
Solution 1:
It would be IDs. Were you to use the apostrophe (i.e, ID's), that would imply possession. If you're simply referring to a group of IDs, you drop the apostrophe.
Solution 2:
As far as I know, there is no valid reason to put an apostrophe in IDs, as it is neither a possessive nor a contraction. It is simply a plural.