Digital Signs: Android or Linux?
Android, the popular Linux variant, is slimmed-down for portable devices such as smartphones, tablets, gaming and media boxes, and desktops and laptops. It also makes a dandy lightweight, power-frugal platform for digital signs. You can stuff an entire Android operating system, plus your multimedia presentations, into a matchbox-sized case and run a big screen with it.
Linux is a mature general-purpose enterprise operating system hardened by two decades of development and use in the most demanding environments, from embedded devices, desktops, laptops, and small servers to mainframes and supercomputers. It's stable, secure, and adaptable.
So which one is better? Both. If you're looking for a digital sign system with software, hardware, and support, you'll find a lot of Android options. If you're more inclined to do-it-yourself, or have good tech people, then Linux offers a wider choice of software, and you can run it on pretty much any hardware.
Digital signage is just a fancy term for your stuff on a screen—like schedules, commercials, product information, menus, catalogs, order forms, or anything you want. You can use just about any kind of display: televisions, ordinary computers and monitors, small form-factor hardware like the Raspberry Pi, digital photo screens, heavy-duty commercial-grade computer monitors, big outdoor screens, and big free-standing touch-screen kiosks.
Check out Viewsonic and Samsung to see what's available in the world of video screens. If you can connect a computer to it, you can make it display whatever you want.