Years later, the DP1400 would surface in the hands of a teenage archivist who used it to link the last of an oral history project into a living stream. It would appear in a courtroom as evidence against shadow permits. It would be on a table at a block party where a new mural commemorated the people who’d saved a corridor. Its software would be forked into other devices, adapted by those who needed a whisper more than a shout.

When working with the Motorola DP1400 software, you will inevitably encounter error messages. Here is a cheat sheet to the most frequent ones: