However, all modern smartphones have Wi-Fi built in, and wireless networks are common enough in indoor spaces that an app could easily scan for known access points and calculate your position using trilateration.

FORBES: Smartphone Location Tools Are Great ... Until You Get to the Front Door

Computer geeks call it war-driving or Net stumbling: roving around with a Wi-Fi-enabled laptop to scan for nearby Wi-Fi access points, then trying to see if they can use them for free.

FORBES: The Days Of Wi-Fi Scanning Are Numbered

We are confident that users will deeply appreciate the ability to print, scan, copy, fax and access Internet wirelessly, all through a single device that is incredibly easy to set up and use.

ENGADGET: HP's new all-in-one printer adds more to that 'all', turns into a WiFi hotspot

More cleverly, a feature Apple calls iTunes Match will let a user scan their music library to unlock access to high quality digital recordings of the music that can be downloaded to any of their devices.

FORBES: Did Apple Just Build An Amnesty Program For Digital Music?

This app allows users to access bar codes and QR codes to scan for payment or admission.

FORBES: The Unsung Hero Of The iPhone 5

McAfee Virus Scan enterprise features built-in, real-time on-access and automatic antivirus scanning and cleaning using the McAfee scanning engine.

ENGADGET: Iomega releases two new StorCenter NAS drives to contain that ever-expanding data waistline

The absolute best thing about using RSS feeds is that after you have everything set up, you can scan the jobs in your reader from anywhere you have internet or mobile access.

FORBES: Connect

You can just scan someone's e-mail, or create a digital repository that someone has access to.

FORBES: Face To Face