Using TextID you can start sending hidden messages in iMessage. You will be able to send messages in iMessage that can only be viewed after the receiver verifies themself using Touch ID or Face ID. This allows you to send messages without the fear of others viewing them.
TextID is easy to use. You can send and view hidden messages within the messaging app. Just by clicking the message and using Touch ID or Face ID to verify yourself as the phones owner, you can unlock the message and the message will automatically disappear after a short amount of time.