What is zipper?
zipper is a modern instant messaging system, similar to WhatsApp® in usability, but mainly conceived for the desktop and not strictly mobile-based. It offers text messaging, file transfer, and high-quality voice and video communication. It is browser-based, so there is no need for users to install any software or driver on the desktop, and it works on any operating system. The mobile apps will soon be available in the Android® and Apple® app stores.
zipper is the first instant messaging system to offer certified mail (or registered letters) for the digital age. We are leveraging the blockchain technology for storing cryptographic reception receipts. Proof-of-reception is ensured by users applying their digital signature using a YubiKey®, a cryptographic USB key used for secure user authentication by Google®, Dropbox®, Facebook®, Apple®, Microsoft® and others.
CLOUD STORAGE INTEGRATION
Link your zipper account with your preferred cloud storage provider, so that all documents received through zipper get automatically uploaded to your storage account. This is a simple solution for backing up and conveniently accessing, searching and managing documents. We currently support Dropbox®, but plan to support other major storage providers such as Google Drive®, Microsoft OneDrive®, as well as Switzerland-based providers.
SECURITY AND ENCRYPTION
zipper uses end-to-end encryption (double ratchet algorithm based on the Signal protocol) for all text messaging traffic, file transfer, voice calling and video calling. The encryption keys stay on the users devices, and are not saved on the zipper servers; the keys can be easily backed-up by users within the application if needed, for example when re-installing a computer’s operating system. The zipper servers for front and back-end are hosted in Switzerland.
zipper Instant Messaging is a startup from Switzerland aiming to challenge the current business communication model.
Our goal is to offer a cutting-edge alternative to paper and email: An instant messaging system focused on security and convenience. With zipper, complex technologies such as authentication, encryption, and digital signature, are proposed in their easiest and friendliest forms to users.
Our prototype is ready for testing. Simply create a new account, get a friend or colleague to do the same and start chatting, exchanging documents, and making audio/video calls. You will need a Yubikey to test blockchain-certified documents and digital signatures.
dr. bernhard distl
dr. daniela brauckhoff
The second version of our prototype is now live. It now uses the Ethereum blockchain for storing cryptographic proof-of-reception for blockchain-certified documents, and introduces Yubikeys as a new mechanism for electronically signing the reception receipts. We believe these two technologies fit perfectly with the zipper instant messaging platform, so that it can offer a truly Read more about 30.11.2017 – Launch of second prototype[…]
We are proud to make this first version of our web application available for testing. Anyone can create an account, invite a friend or colleague and start exchanging messages, documents, or use the voice and video-conferencing functions. You can even connect to Dropbox so that all received documents get automatically uploaded to your account. Test Read more about 07.02.2017 – Launch of first prototype[…]
The zipper team (formerly known as doqum.io) is honoured and grateful to have been part of the first cohort of startups chosen by nexussquared for their virtual accelerator program. The program, focused mainly on nurturing use cases for the blockchain technology, had very exhaustive and intensive workshops in Amsterdam, London and Berlin, as well as Read more about 15.08.2016 – nexussquared accelerator[…]