Title on the article is different now - maybe it was changed?

> "at least ten have a police force that uses face recognition. Four plans to introduce it in the coming years."

The only way to get to half of 28 is to sum those using it and those intending to do so soon. I think the majority they refer to is of the 25 they surveyed, but even then it is only a majority of respondents (not all responded). Sensationalism for sure.