Portable bot scripts usually operate through one of two methods: Image Recognition:

The "portable" aspect is crucial for users who farm on shared computers, school laptops, or workstations where installing software is prohibited.

A Hay Day bot is a third-party program or script designed to simulate human gestures within the game. These scripts typically run on Android devices or through PC emulators and can perform a variety of high-frequency tasks automatically:

A script might be "portable" in the sense that it fits on a USB stick, but it isn't invisible. Supercell’s anti-cheat reads your device's input patterns. A script clicks the exact same pixel every 2.3 seconds. A human doesn't do that. Once their servers see that robotic rhythm, your account is flagged.