Facebook Messenger is all set up to allow friends to send each other money. All Facebook has to do is turn on the feature, according to screenshots and video taken using iOS app exploration developer tool Cycript by Stanford computer science student Andrew Aude. Messenger’s payment option lets users can send money in a message similar to how they can send a photo. Users can add a debit card in Messenger, or use one they already have on file with Facebook. An in-app pincode also exists for added security around payments. It’s unclear whether Facebook will monetize Messenger by charging a small fee for money transfers, or offer the functionality for free to drive usage of its standalone chat app. That will be up to David Marcus, the new head of Messenger who was formerly the president of PayPal.