To some people, the idea for an iPhone app designed to let students record video statements of agreement before engaging in sexual activity sounds like a bad joke. Or perhaps just a well-intended overuse of technology. But Michael Lissack has come up with a set of such apps, and he defends them as a way to reset the conversation around sex on the campus. His creation, called We-Consent, is actually three apps — one that lets students document mutual consent to a sexual encounter by video-recording a conversation about it with the cellphone’s camera, and two "no" apps that record an individual watching a message on the phone that clearly states "no," so there is a record of that individual having received the message.