Keep messages private by protecting them with your fingerprint or a passcode (now built directly into iMessage!). 170,000 people already use Black SMS for intimate messages, photos, group chats, girl talk, guy talk, gossip, and work-related secrets. Download now to protect your messages with Touch ID fingerprint lock, so only the intended people can read, even if someone else has their phone. Black SMS uses military grade 256-bit encryption Download now to securely encrypt all your messages. Compatible with iOS 10 software on iMessage