We explore a real-time method of controlling a wireless device using the pulse sequence - with a series of short RF pulses. We show that it is possible to encode and detect eight unique identifiers with a high reliability in 52 μs. Some identifiers are followed by short (< 1 ms) navigators that encode the pose of the device in the imaging volume. Other identifiers are followed by more RF pulses that encode information used for device configuration. These tools minimise the impact on the main pulse sequence and allow the device to tailor feedback precision to the pulse sequence requirements.