Systems, devices, and methods are provided herein for handless operation of a door. For example, a system is disclosed having a foot pedal assembly configured to be disposed at a bottom edge of the door, the foot pedal assembly configured to generate a signal, and a push-lock assembly configured to attach to a door handle external to a mounting rose of the door handle, the push-lock assembly configured to receive the signal from the foot pedal assembly and translate the signal into rotational movement configured to operate the door handle.