If people will show their moles to a stranger at a dinner party, a stranger on the internet doesn’t seem like a big stretch, notes MobiHealthNews.

Since the beginning of health apps, there have been products designed to tell the user if a mole is cancerous. But those apps have also served to illustrate the dangers of mobile health.

Two such apps, Mel App and Mole Detective, were the target of action by the Federal Trade Commission in 2015.