The world's largest technology show is wrapping up in Barcelona. Samsung, Sony, and thousands of other firms unveiled new gadgets at the Mobile World Congress in Barcelona. Samsung used the event to show off the newest generation of its wildly popular Galaxy smartphone. The Korean electronics maker also revealed a new mobile payment system, Samsung Pay. Competing with similar systems from Apple, PayPal, and MasterCard, it's meant to allow smartphone users to pay for in-store purchases with the swipe of a fingertip. IKEA also unveiled a new technology that's supposed to make it easier to recharge cellphones and tablets. GPB's Bradley George reviews this week's developments at the Mobile World Congress with science and technology correspondent Renay San Miguel.

Renay hosts Sci-Tech Now, Wednesday nights at 7:30 on GPB-TV.

Tags: Bradley George, renay san miguel, sci-tech now, Samsung, Ikea, Mobile World Congress