Digital Swiss Francs are a ERC-20 Token on the Ethereum blockchain. You need an ethereumaddress to recieve a Digital Swiss Franc. Make sure you have full control (e.g. private key) over your ethereumaddress, if you have an address on an exchange you don’t have the full control and you cannot access your Digital Swiss Franc.
In order to create a ethereumaddress you can use https://myetherwallet.com or Metamask and follow the instructions there. For a mobile solution you could create an ethereumaddress on a app like Eidoo oder Leth.
Important note: If you loose your password or private key there is no way to recover that !
How can i see the Digital Swiss Franc