Where are your servers?
In Switzerland the right to privacy is guaranteed by article 13 of the Federal Constitution. This means that we will not and cannot reveal your private information.
You asked for access to my contacts list. What for and what do you do with them?
We collect only the minimum amount of information needed to help find people you know who are also using Swissper. We never share it, sell it or use it for any other purpose. The information we check is not stored on any of our servers. All the checking is done on your phone.
Do you store any information about me or my contacts?
We only store your phone number, which is also your username to login to your app. This information is stored as a long hash and encrypted so only our app can read it, no humans!
Do you store my messages?
Messages are only stored for as long as it takes to deliver them. Once delivered, both the message and all data about that message are erased. If a message cannot be delivered to the recipient within 72 hours (3 days) the message is deleted and the sender is notified to resend the message.
Could you read my messages while they are on your server?
No. We use a range of encryption algorithms and end to end encryption. This means that your device holds the key to unlock each message, not us!
How does Swissper work?
The simplest way to explain how we protect your data is that we use a 'Public' and 'Private' key encryption (Asymetric) method.
Your app generates a private key; this key is completely unique to your phone and cannot be guessed by anyone or Swissper. It's the most secure way to encrypt and decrypt messages that are sent and received by the Swissper application. The application then sets up an encrypted data tunnel from your phone to our servers and then from your phone to who you are sending a message to. We use tried and tested encryption called TLS, RSA and AES to encrypt the data and message, referred to as end-to-end encryption.
When you send a message you encrypt it using the public key and the only way to decrypt the message contents is to use the bespoke private key of the receiver. Anybody is able to encrypt a message but only the person who you want to read the message can decrypt the message contents. This also means that not even Swissper can see what messages you are sending. It's not only messages that can be encrypted, Swissper also encrypts images, documents and videos using this method of end-to-end encryption.
If someone intercepts my message can they read it?
No. Not without the two decryption keys. It is technically possible to decrypt your message without the keys however at current computing power it would take approximately 65 years.
Can I send a message to someone who isn't in my contacts list?
Yes. If you know their unique Swissper ID number.
Can someone I don't know contact me?
Yes. If they know your unique Swissper ID number.
Can I stop someone from contacting me?
Yes. If you remove someone from your contact list you have the option to block them from contacting you. If someone anonymous has contacted you through your Swissper ID number you can block them exactly the same way.
What if they un-join Swissper and then re-join with a new Swissper ID number?
The Swissper ID number is directly linked to the mobile device's phone number. Our server will recognise the phone number and identify it as the same user, so if you have blocked them they cannot contact you.
If I change my mind can I unblock them?
Yes. If they are in the main contact list on your phone you can add them back into your Swissper contacts list.
If I lose my phone could someone read my messages?
Only if your phone is unlocked. We recommend you activate both your iPhone autolock and use the optional Swissper Lock, this a four digit pin that is needed to open Swissper, for added security. If someone enters the wrong pin code 5 times the app will lockout for 5 minutes after a further 5 failed attempts you will be logged out of Swissper securing your messages from prying eyes. The Swissper application can also be unlocked using the iOS fingerprint recognition utility (only available on iOS 8). We also recommend that you activate 'Find my Phone' on your iPhone so that you can remotely lock and erase your iPhone if it is lost or stolen.
If I get a new phone can I copy my old messages onto it?
Sorry, no. For maximum security, your messages are not stored on our server and cannot be backed up to another computer. Also if you delete the Swissper app all of your messages will be erased and cannot be recovered.