WASHINGTON — If you’re on federal disability payments and on social media, be careful what you post. Uncle Sam wants to watch.

The Trump administration has been quietly working on a proposal to use social media like Facebook and Twitter to help identify people who claim Social Security disability benefits without actually being disabled. If, for example, a person claimed benefits because of a back injury but was shown playing golf in a photograph posted on Facebook, that could be used as evidence that the injury was not disabling.

“There is a little bitty chance that Social Security may be snooping on your Facebook or your Twitter account,” Robert A. Crowe, a lawyer from St. Louis who has represented Social Security disability claimants for more than 40 years, said he cautioned new clients. “You don’t want anything on there that shows you out playing Frisbee.”

In its budget request to Congress last year, Social Security said it would study whether to expand the use of social media networks in disability determinations as a way to “increase program integrity and expedite the identification of fraud.”