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> We only provide a replacement token to the user in return for them bringing a complete charge session report.

What prevents the user from reusing the token? Does the charger keep some state about previously seen tokens?

Exactly. This is something we can do because we operate semi-private (as opposed to public) infrastructure, and over its lifetime each charger will see a (relatively) small number of users.

I see. Then the expectation is that the user charges only at one charger, as otherwise a token might be reused at a different charger. Thanks, sounds interesting!

More or less. We expect our users to charge at a relatively small number of chargers (you might have, say, 10 shared chargers in some buildings), and likewise for chargers to see a relative small number of users over their lifetime. Hope you'll get a chance to use it in a building near you soon!

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