Being reimbursed


100 % completed 100 %
Vannes FR
Amount sought 500 000 € seuil mini 100 000 €
Amount collected 500 000 € seuil mini 100 000 € sur 500 000 €
Loan rates
Term of loan
Eligible funders
  • Individuals
  • Legal entities

Warnings about the operation

We draw your attention to the fact that crowdfunding operations present a risk of partial or even total loss of your capital.

We invite you to carefully read the information relating to this financing project, to diversify your investments and to mobilize only part of your capital in crowdfunding.



  • Business sector : Cybersécurité / Legaltech
  • Legal form : SAS
  • Creation date : le Jan. 21, 2016
  • Business identification number (SIRET) : <p>81785242900023</p>
  • Capital : 185000€

We are delighted by your interest in KEYMO by BYSTAMP.

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BYSTAMP has designed an electronic stamp, called KEYMO, which transform the use of the ink pad to the digital world. With a simple stamping gesture, KEYMO allows you to sign a PDF document on any smartphone / tablet, ensuring strong authentication of its owner and guaranteeing the sovereignty of the signed data.

The idea behind BYSTAMP was a non-profit fundraising app project meant for the use in physical stores. The problem was "How to validate, simply, quickly and on 100% of smartphones, the checkout knowing that the application is not connected to the checkout system?"

Several methods were studied (QR code, NFC, etc.) but none was satisfactory. Retail traders usually  used a paper map with an ink pad. Well, let's stamp this dematerialized card on the smartphone.

A prototype was quickly designed and presented at the "Big4Startup" event organized by BPI at the end of 2016. The next day, the founders of BYSTAMP were contacted by EDF, which launched a major project to dematerialize the maintenance processes of nuclear power plants. The question arose of the strong authentication of individuals on their tablets and especially those of their subcontractors. This project, which involves the entire nuclear industry, is well advanced, is still ongoing and BYSTAMP is a stakeholder.

From then on, the company turned to a technology company specializing in mobile authentication solutions.

After 3 years of research and 2 patents, KEYMO is the third version of the electronic stamp which offers unprecedented features in cybersecurity while meeting the criteria of simplicity, ease of use and habits for all populations.

We are delighted by your interest for the campaign of BYSTAMP. To be able to access full company information, you must be logged in.

Reminder of the operation

500 000 €
Maximum investment
Term of loan
Amount collected
500 000 €
Served rate

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Please note : crowdfunding operations may present risks of non-repayment and loss of capital. Investments present a significant risk of partial or total loss of capital as well as a risk of liquidity. We invite you to spread your investments and only commit amounts that you do not have an immediate need of.