Beeper Mini is a new app developed by Beeper that allows Android users to send iMessages to iPhone users. Interestingly, the app is based on the research of a 16-year-old high school student who reverse-engineered Apple’s iMessage, allowing any device and Android and Windows to send messages using this closed standard. Beeper CEO Eric Migicovsky says he was skeptical at first, but became convinced after seeing the prototype, reports The Verge.

The Beeper Mini app works differently from other similar services that require the user to have an Apple ID and essentially use a Mac computer as an intermediate server for sending messages via iMessage. Accordingly, the user has to entrust his account to the service, which creates security risks. Beeper insists that their app sends iMessages directly to Apple’s servers, bypassing the need to transfer your Apple ID to a Mac hosting service.

Beeper also says it does not have access to users’ messages, contacts, or Apple ID passwords. The program connects to Apple’s servers like an iPhone, and its code will be open-sourced so that security researchers can make sure Beeper Mini is safe to use.

The launch of the program raises questions about how quickly Apple will be able to react to its appearance and whether it will be able to close this loophole. After all, Beeper has already been working with a less secure iMessage repeater for almost three years without any problems from Apple.

The Beeper Mini costs $2 per month and currently offers access to iMessage only, but plans to integrate other chat services in the future. The company says that its strategy is to create one app to communicate with anyone around the world.