Do you mean installling TracerPlus on the cellphone, or deploying your project (ie. Tracer is already installed on the phone). In both cases action from the user is required.
To
install TracerPlus on an
Android phone, the user would need to download it from the
Play Store, and activate it using a valid activation or redemption code.
To
deploy your project to an
Android phone remotely, you would need to have a
TracerPlus Deploy Server running. Have a look at the
TracerPlus Desktop User Guide Chapter 10, that explains it pretty well. Once the server is up and running and you have your project loaded, the user would need to scan a QR code from within TracerPlus to download the specified project.