It gets worse :/
I looked up the brand (Invenda). Their PDF includes "using AI", "measuring foot traffic", and gathering "gender/age/etc" e.g. facial recognition to estimate a persons age and gender
And in terms of "stored locally" this is straight from their website
The machine comes with a “brain” – Invenda OS – and is connected to the Invenda Cloud, which allows you to manage it remotely and gather valuable environmental, consumer and transactional data. The device can be branded according to your requirements to further enhance your brand presence.
The marketing also so fricken backwards that it reads like satire:
For a consumer, there’s no greater comfort than shopping pressure-free. Invenda Wallet allows consumers to browse, select and pay for products leisurely and privately 🤦♂️