Revealer Card Visually Encrypts a Cryptocurrency Seed Phrase
Report 30 April 2018

https://news.bitcoin.com/revealer-card-visually-encrypts-cryptocurrency-seed-phrase/

A new startup called Revealer is on a mission to create sound backup solutions for cryptocurrency mnemonic phrases and seeds. Just recently the company launched its first product dubbed ‘Revealer Zero’ – a small card system that visually encrypts and decrypts digital currency seed phrases or any alpha-numerical secret.