How apps spot an Android emulator (part 1): build props and kernel tells

Research into Android emulator detection reveals multiple layers used to identify virtual machines. Initial checks focus on build props and kernel tells accessible from userspace. More advanced detection involves the hardware and behavior layer, where apps analyze sensors, telephony, and the GPU. Specifically, the HAL exposes vendor strings that act as giveaways. These methods allow developers to separate legitimate phone users from bot farms using VMs for test automation or bonus farming via adb shell measurements.