2021 World Champion technology
Keepser is the only internationally patented cold wallet in the world.
Secure your cryptocurrencies and your datas (seed phrases, usernames & passwords, bank cards, loyalty cards) with the most advanced technology in terms of security.
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Keepser is the most secure card in its class. It is Greentech and meets your digital security needs with patented technology and 2021 World Champion.
Tailored to your needs with different storage capacities.
With a smartphone and Keepser, you achieve the highest level of security offered by a card.
At last, a real safe portable device. The private keys of your cryptos and seed phrases are in a safe place, and never leave the card.
The data is never outsourced to any cloud or server (such as Google, Microsoft, Amazon, social networks, etc.) no risk of leakage or hacking.
Identify yourself on social networks, your data is never exposed. Secure access to your e-mail box or online banking, among other things.
Save money, one payment for life, you don't pay a subscription, neither monthly nor yearly. No hidden costs.
Do not worry about the obsolescence of the card, Keepser technology does not expire.
Buy securely online. Keepser authenticates you so you can pay with your encrypted stored bank cards.
Stop looking for your cables, there is no battery. Easy to transport and available anywhere, anytime.
Allow yourself to forget all your passwords, the Keepser card encrypts them and stores them for you.
Share your data effortlessly and securely, Keepser encrypts your data to send it to whoever you want, wherever you are.
Secure quickly and easily, transfer your data effortlessly with a simple gesture!
You just need to place your Keepser behind an Android smartphone with an NFC antenna and the connection will be instant. The card works with the Keepser mobile application and web browser plugin previously installed.
Cutting-edge technology in a card the size of a bank card.
Convenient, keep your card in your wallet or in your pocket! No cables, no battery, no power. Storage is simplified, so you can use it every day, month, year, decade. The beginning of freedom now ...
In partnership with Freemindtronic, years of engineering development and creative efforts have resulted in many of the patented technological feats contained in our cards.
It is implemented in Keepser in encryption systems for Keepser's physical memories, data exchanges with the extension, access control and sharing of Keeps contained in a Keepser by adding criteria for trust.
See the patent
New stand-alone hardware and digital access control system without connection to an external server and with a customizable configuration system for independent "Administrator and User" authentication. This helps fighting many types of intrusive and non-intrusive attacks such as the interception of communication frames by malicious people.
See the patentThe technology of the Freemindtronic study centre implemented in our cards has won several world awards which makes Keepser the most secure card in the world.
Questions? We have the answers.
4 steps in 2 minutes
First step: Download the Android app.
Step two: Pair your Keepser with your Android smartphone by scanning the QR code on the white card (backup).
Step three: Download the Keepser chrome plugin.
Last step: Associate your Android smartphone with the Keepser chrome plugin.
Bitcoin BTC, Ethereum ETH, Litecoin LTC, Ethereum Cash ECASH, Namecoin NMC, Bitcoin cash BCC, Ethereum Classic ETC, ReddCoin RDD, Bitcoin Gold BTG, Ethereum Gold ETG, Ripple XRP, Dash, Ethereum lite ELITE, Solar Coin SLR, Digibyte DGB, Feather Coin FTC, Stellar XLM, Dogecoin DOGE, IOTA, Verge XVG, Tron TRX ...
Regarding this list of cryptocurrencies, you can automatically generate your public address from your private key. We work every day to increase this list. Keepser can also store any type of private key based on BitCoin and Ethereum (ERC20).
The official Keepser apps and extension:
