A digital wallet is used to store digital coins just like a wallet or bank account, it saves money.
The difference is that instead of storing a collection of notes and cards, a digital wallet stores a collection of private keys from digital coins.
Typically, a wallet is encrypted with a password or protected from unauthorized access. Your MyCoinDeal wallet is controlled only by the owner.
It is important to keep your MyCoinDeal wallet safe, either by setting a strong password and using all the security factors that MyCoinDeal provides.