ESP-WHO is a face-detection and face-recognition development framework based on Espressif's ESP32 chip. It can be used with the ESP-EYE development board or another ESP32 development board, such as ESP-WROVER-KIT. With ESP-WHO, users can easily build such projects as a coffee machine that brews coffee according to their particular preferences, or home appliances that shut down automatically when unsupervised children are in the vicinity.