Systems and methods for hands-free liftgate activation

This disclosure describes systems and methods for hands-free liftgate activation. An example method may include receiving a liftgate activation signal. The example method may also include receiving first data from a sensor of a vehicle at a first time and second data from the sensor at a second time. The example method may also include determining that a first difference between a second value associated with the second data and a first value associated with the first data is greater than a first threshold amount. The example method may also include disabling, based on the determination that the first difference is greater than the first threshold amount, activation of a liftgate of the vehicle. The example method may also include receiving third data from the sensor. The example method may also include determining that a second difference between a third value associated with the third data and the first value is less than a second threshold amount. The example method may also include enabling, based on the determination that the second difference is less than the second threshold amount or a determination that a first timer has elapsed, activation of the liftgate.