Final answer:
The name must match between the photo ID and SSN card to establish consistent identity across documents, which is particularly important for legal and administrative purposes such as voting.
Step-by-step explanation:
To answer the question regarding what must be the same on the photo ID and the SSN card, the most essential element is the name. This name must match between the photo identification and the Social Security Number card to establish identity consistently across documents.
According to photo identification laws, for example in Indiana, the identification provided must show a name that matches voter registration records, which would also need to match the name on the SSN card when employed for voting purposes.
Furthermore, while the focus here is on the consistency of the name, other information like the expiration date or address may also need to be updated and consistent across various forms of identification depending on the specific requirements of the context in which they are being used.