Services like TouchPay show how NFC-enabled accessories for smartphones can deliver the future of payments today and help hasten mainstream adoption.

ENGADGET: Visa lets iPhone-toting NatWest and RBS customers pay with NFC cases, join the future

For example, NFC will allow consumers to instantly show video taken from a smartphone on a smart TV by tapping the devices together.

ENGADGET: Broadcom intros quad-combo, fast single-card wireless chipsets that put NFC at center stage

Another big theme at the show will be Near-Field Communications, or NFC.

NPR: Wireless Show Expected To Draw Crowds To Barcelona

Broadcom Corporation (NASDAQ: BRCM), a global innovation leader in semiconductor solutions for wired and wireless communications, today introduced two new Near Field Communication (NFC) solutions to be showcased at the upcoming 2013 Consumer Electronics Show (CES) in Las Vegas.

ENGADGET: Broadcom intros quad-combo, fast single-card wireless chipsets that put NFC at center stage

Screenshots in the app supposedly show a mail-in option for plastic that could completely replace credit and debit cards without turning to NFC.

ENGADGET: Google Wallet update purportedly leaks plans for a real-world card, transfers and transit passes