Preventing false activations based on don/doff detection for assistant systems

One or more computer-readable non-transitory non-volatile storage media embodying software that is operable when executed to:

• receive, at the head-mounted device, one or more touch inputs from a user corresponding to an activation trigger for an assistant system executing on the head-mounted device;
• access, by the head-mounted device, one or more signals from one or more inertial measurement unit (IMU) sensors of the head-mounted device;
• determine, by an on-device don/doff detection model and based only on the one or more signals from the one or more IMU sensors, that the user is either donning or doffing the head-mounted device;
• and
• override the activation trigger to prevent an activation of the assistant system responsive to the received one or more touch inputs.

A system comprising:

• one or more processors;
• and a non-transitory non-volatile memory coupled to the processors comprising instructions executable by the processors, the processors operable when executing the instructions to:
• receive, at the head-mounted device, one or more touch inputs from a user corresponding to an activation trigger for an assistant system executing on the head-mounted device;
• access, by the head-mounted device, one or more signals from one or more inertial measurement unit (IMU) sensors of the head-mounted device;
• determine, by an on-device don/doff detection model and based only on the one or more signals from the one or more IMU sensors, that the user is either donning or doffing the head-mounted device;
• and
• override the activation trigger to prevent an activation of the assistant system responsive to the received one or more touch inputs.