Takeaway.com is an online food delivery system. The author of this post found an Android-based kiosk online for super cheap so they decided to buy one.
Their goal was a Kiosk escape while using the system to perform various bad actions as an actor. After several deadends, such as using keyboard shortcuts, they found that Android will open apps automatically using NFC. So, they wrote to an NFC card with a particular package name and Android opened it! In their example, they use the Android settings.
They used the settings to enable the status and navbar. With this, it's much easier to work on the Android device. Using a file system app on the device, they were able to extract the APK from the device to reverse engineer. They found that 14611 sent the device into a factory test menu and 59047 gave an app launcher that is both hardcoded.
Using a male to make USB cable, it would be possible to connect via ADB, since it uses a userdebug ROM in production. This would allow dumping the file system, overriding the OS and many other things. Good jailbreak post!