We had an email from them this morning, re-emphasising the mask and shop alone rules.Manoverboard wrote: ↑12 Jan 2021, 08:29 Sainsbugs are hiring trained Security Guards to enforce mask wearing and with luck they will refuse entry to those who are exempt. The latter should be doing their food shop online else get a little helper to do it for them.
But I have one issue, which is they specify mask or visor. And all the research suggests a visor alone is of little use as virus particles in aerosol form waft in or out around the edges exactly as they would with no visor at all. A visor is only any use as a supplement to a mask or in the situation of close face to face contact, such as a hairdresser or dentist, to stop them coughing or sneezing in your eye, or visa versa. It's only other useful function is to discourage the user touching their face.
There was a case of a mass infection at a gathering at a hotel. All those infected had been wearing visors. None of those wearing mask were infected.
The rule needs to be specifically a mask, or no entry.