This line really creeps me out. Essentially: "But it's OK, because we're being very clear about what we are doing, handing out leaflets and wearing our uniforms so you can trust us."
If these trials are successful - or, for that matter, if they are not - can we assume that they will drop all of that facade at the earliest opportunity in favour of silent and ubiquitous rollout?
Who will be wearing uniforms and handing out fliers in 1, 2 or 5 years, when facial recognition surveillance technology operates behind every one of the thousands of surveillance cameras that capture our faces and movements every single day?