What lies behind it,
and why you don’t have to think about it.
This page is written for your legal, IT and compliance teams. Your audiences will never see any of what follows. That is the whole point.
The technology stays invisible
Your audience doesn’t create an account, doesn’t install an app, and handles neither a digital wallet nor virtual currency. A link or a code to scan, an email address, and that’s it. A paid Keyzz is paid for by card, like any online purchase.
Personal data
Trust is built both ways: the brand offers privileges, the audience chooses what it wants to share in return. RECALLby organises this relationship in keyzz.app.
The brand gives first
Holders first discover the value on offer. The brand can then offer new privileges and ask for information useful to the relationship. Everyone chooses what they agree to share; a higher privilege never counts as automatic consent.
A direct channel, chosen sharing
The brand communicates in keyzz.app with the holders of its Keyzz, without needing their contact details. The data stays with RECALLby. Only the data that holders expressly allow to be shared with the brand can be exported from its dashboard.
No third party cookies
The system relies on no third party trackers. It therefore keeps working exactly the same as browsers phase them out.
Data hosting
Data is hosted by Amazon Web Services (AWS), in Ireland, within the European Union.
Each person’s rights
In accordance with the General Data Protection Regulation and the French Data Protection Act, you may, depending on the processing concerned, have in particular a right of access, rectification, erasure, restriction of processing, objection, portability where applicable, and the right to withdraw your consent at any time where processing is based on it.
You can exercise your rights by writing to us at contact@recallby.com. You also have the right to lodge a complaint with the CNIL, the French data protection authority.
Full details are in our privacy policy (in French).
Authentic and unique
Each Keyzz has a unique identifier that makes it possible to verify its authenticity and control its use. That is the only reason a registry is involved.
Certificate of authenticity, Dove-i · Métamorphosis.
A print run set in advance, a number for each copy
The number of copies of an edition is fixed when it is created and cannot be increased afterwards. Each copy carries its own number.
The registry: Polygon, proof of stake
The public registry we use runs on proof of stake, whose energy consumption bears no comparison with that of the historic proof of work registries. It is used only to guarantee uniqueness and traceability, never to expose personal data.
What a Keyzz is not
A Keyzz is an access and privilege pass. It confers no financial or property rights, it is not backed by any resale market, and its value is not meant to change. RECALLby is neither a custodian of digital assets nor an exchange platform: it is a technology provider.
Reliability on the day
Nothing to install for the public
The journey works directly in the browser, with no app to install.
Offline access control
The tool your teams use on site works without a connection and syncs as soon as the network is back.
Guaranteed uniqueness
Each copy is linked to a unique identifier used to control its delivery and use.
The company behind the platform
Paris, founded in January 2025
SIREN 940,003,080
Grand Paris
INPI filing of 19 June 2026
applications no. 5270325 and no. 5270312
RECALLby publishes the Keyzz platform and its Keyzz Pro administration space.
A question from your legal department
or your IT department?
We reply in writing, with supporting documents, before any commitment on your part.