San Francisco's mayor wants to loosen the recently adopted restrictions on surveillance by city government. The thug department would be allowed to watch directly through surveillance cameras in areas which have seen certain kinds of crimes.

This exception would still keep limits on their surveillance, but the use of the exception needs to be monitored. Here are my suggestions:

• The times and places where they exercise this exception must be logged precisely, and the log must be published in full within 6 months.
• The number of people who appear in the videos for which the exception is invoked must be counted, and published, together with the number of people charged with a crime as a result of being watched in the video, and the number subject to a possible miscarriage of justice as a result.