Flipper Zero is a portable multi-tool device designed for geeks, hackers, and pen testers to explore and hack digital systems such as radio protocols, access control, and more. It is a toy-like device that combines all the hardware tools needed for exploration and development on the go, including a 1.4" monochrome LCD display, a 5-button directional pad for menu navigation, and a status LED. Flipper Zero is designed to interact with various types of access control systems, radio protocols, RFID, near-field communication (NFC), and infrared signals. It can read, copy, and emulate RFID and NFC tags, radio remotes, iButton, and digital access keys, along with a GPIO interface. Flipper Zero can also be used as a regular USB to UART/SPI/I2C/etc adapter. It can be controlled from a 5-position directional pad without additional devices such as computers or smartphones. Flipper Zero is a versatile tool for hardware exploration, firmware flashing, debugging, and fuzzing. It can act as a BadUSB device, which means that when connected to a port, it is seen as a keyboard or mouse, allowing it to automate scripts in a variety of platforms. The device gained popularity on TikTok when it appeared in a flurry of videos from hackers and script kiddies playing pranks in public. However, it is important to note that misuse of the device, such as tampering with systems or devices without proper authorization, is the sole responsibility of the user and is not advocated by the creators of Flipper Zero.