App and web-based ordering has become commonplace during the pandemic.

But the Information Commissioner's Office told the BBC that customers should be aware they had a choice over whether to share information.

Venues should only ask for data that is "relevant and necessary", the ICO said.

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A blog by the ICO

'We’ve issued two reprimands, which are legal warnings, recently to schools for wrongly disclosing the personal data of children.

In the first case a class photograph, sent to a local newspaper by a Cheshire primary school, included the images of two pupils whose adoptive parents had refused consent for their children’s images to be shared'

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