When either phone line or Internet connection is available since you are at a remote place, the wireless credit card terminal happens to be your best option.  They do not require phone line and can communicate without wire like the cell phones. 

Transactions can be processed on such terminals anywhere and at anytime. Of course you can also opt for the store and forward process but the terminal will not actually dial and verify the authorization till it is connected to a phone line or you get Internet connection for it. 

For acceptance of ATM and Debit cards you may require a PIN number and therefore a PIN Pad will be necessary. The PIN allows the customers to make payments using their cards instead of paying by cash. Prices and brands may be your major considerations for selection of the appropriate credit card terminal. Also remember that a lease is never a viable proposition and outright purchase is always the better option. 

Modern wireless credit card machine works much faster than the traditional machine and offers error free transactions. Such machines are flexible and lightweight and help traveling features. Most of them also use touch screens.  Having multi application facilities most of these credit card machines can support wide varieties of payment services. Latest design of the terminals is to pack all the featured functions that a merchant might require into one model pack and the machine serves as an all purpose instrument.