A transport service system receives a ride request from a user device of the transport service, the ride request specifying information about a trip and selecting a direct dispatch pairing mode. The transport service system receives from the user device an input animation, the input animation acquired by the user device from a driver device. In one embodiment the input animation is a sequence of flashing colors. Based on the input animation, the transport service system identifies the driver device and transmits the received ride request to the identified driver device. The transport service system receives an acceptance from the driver device and pairs the driver device and the user device for the ride.