It's a moratorium on the use of facial recognition technology by law enforcement. The reason it's a moratorium and not a ban is that essentially the moratorium would give time to look further into the issue—to launch a judicial inquiry, for example—until we can determine whether it is appropriate to use facial recognition, under what circumstances and with what safeguards, and then include the time to put those safeguards in place.
On March 21st, 2022. See this statement in context.