All Your Credit Cards Combined In One

all cards in one
Protean Echo is a card that can help you use all your credit cards though one. It works in combination with a smartphone key letting you scan the magnetic stripes of all your credit cards. Then you have to choose three of them to load onto the physical Echo, while all the rest are being stored by the associated app. The three designated ones can be changed at any time. When ready to pay, just choose the card you prefer to use at the moment. If you worry about the battery life of the device – forget about it, they last around two years.
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