Pundi X is a point of sale system for merchants and retail stores to easily accept cryptocurrency payments for goods. Unlike other solutions, this one does not operate by using a standard payment card on the Visa network like many competitors.
They have actually manufactured their own POS devices that allow you to simply tap to pay. This system, while more difficult to get adopted has serious advantages, such as that it is not hindered by the regulations of Visa or similar payment processors.
This platform supports not only their native currency, but it also allows for many other currencies to be used as well including Ethereum, Bitcoin, ERC20 tokens and more. They've also partnered with Retn, which will allow for users to earn loyalty points on cryptocurrency purchases much like they would with cash back via a bank account or credit card from a traditional bank.
You should, however, be aware that they are in the middle of a coin swap. If you plan to make a Pundi X investment this can have unpredictable effects on the price of any asset. Be very cautious.
While the volume is there to make a purchase, there are only a few exchanges where you can buy Pundi X. Interestingly, there is no Bitcoin trading pair available. You'll either need to make your purchase using Ethereum or the South Korean Won as a base pair. You'll likely need to make an alternate exchange account, as well as the familiar ones, are absent here. For this reason, it's in your best interest not to leave any coins on the exchange, but instead transfer them to a safe wallet.
If you need a secure wallet to store your coins in then there are many options available. This is an ERC20 asset, and that means you can keep it safely in any wallet that accepts Ethereum tokens. If you need a recommendation then My Ether Wallet, Meta Mask or a Ledger hardware wallet are all solid choices.