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The connected card 'wallet replacement'

27 April 2015 Last updated at 00:39 BST

The Stratos card aims to be a single credit-card sized replacement for all the existing cards in your wallet.

The card costs $95 (£63) as an on-going subscription, which includes access to card upgrades and cloud-services tied to the card to help users keep track of their spending.

The start-up is one of the first to market with the hi-tech card, which is aimed primarily at the US market; it does not currently support international standards like chip and pin payments that are increasingly popular elsewhere.

The BBC's North America technology correspondent Richard Taylor was given a demonstration of the wallet by the Stratos founder Thiago Olsen.