Supermarkets across the UK are offering lanyards to customers who may not be able to wear a face mask due to certain health conditions.
Charity Hidden Disabilities said sunflower badges are being handed to people who may be exempt from the new law because they have a medical concern, such as autism or severe anxiety.
It means if you see a customer wearing one, they may have an extenuating circumstance, or may be a carer for someone who, for instance, needs to be able to lip read.
Hidden Disabilities said the sunflower lanyards themselves can be picked up for free at Sainsbury's, Tesco, M&S and other supermarkets - and you don't have to provide proof of a disability to claim one.
The company's website explains: "Businesses who are members of the scheme are aware of our card and provide support, help, assistance or simply a little more time to those wearing the Hidden Disabilities Sunflower.
"However, please note that shops and public transport can still refuse you entry if you are not wearing a face covering."
Customers can also puchase a sunflower badge online for 55p. It's a one off charge, but could be crucial for anyone who is worried they may be approached about not wearing a face covering in public.
Alternatively, the Government is handing out exemption certificates for free online, which you can ready about below.
Face mask exemptions - all you need to know
The government currently says you don't have to wear a covering if you have "any physical or mental illness or impairment, or disability", and would experience "severe distress" from doing so.
This includes:
If you're travelling with someone who requires lip-reading
If you suffer from severe distress when you put it on
Suffer from a disability where you're unable to put it on
Or you need to eat, drink or take medication
If you are aged 11 or under
If you are travelling with someone who requires lip-reading or reading facial expressions
The Government also offers free exemption cards
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The Government says you will not be asked to show written evidence if you're not wearing a face mask - with supermarkets and shops urged to be mindful towards those who may have special circumstances.
However, exemption cards and badges are available if you're worried about being stopped.
This is a personal choice, and is not necessary in law.
You can you can get an exemption card for free from the government here.
