“Sexting” thrives because of that speed: share now, regret later. It also operates on trust, but intimate moments are often fleeting, people can be cruel, and trust can quickly evaporate. The swift, simple mechanic of digital copying is the nemesis of the thoughtless sexter; one copy can become two copies, four copies, hundreds of copies in a matter of minutes. But now, perhaps unsurprisingly, apps are appearing that allow clandestine sharing without associated anxiety.