If you are using the new iPad or Android app for Check-In, you will notice that there is no ‘magic button’! Why? Well, on these platforms we have other ways of doing things that are more appropriate for the device you are using.
Each process for mobile Check-In is described in this help article.
If you have not already looked at the TouchPoint Check-In app, you should check it out! It is free from the App Store and Google Play.