Lime is a shared micromobility service whose electric bikes and scooters are unlocked through a smartphone app, usually by scanning a code on the vehicle. The short chirp and clunk marks the moment the electronic lock releases and the ride can begin, a sound heard daily on streets in many major cities. As bike share became a normal part of urban travel, recordings of the cue spread online as a recognisable everyday sound, reused by cyclists, travellers and editors who need an instant signal for unlocking and setting off.