While the details are a little vague, it seems they took issue more with the specific low-level ways apps like WiFi Analyzer work under the hood than simply the idea that you might want to see available networks, channels and signal strengths. Film-capable scanners, however, tend to be bulkier and heavier because of the built-in light source in the lid.However, Apple didn’t ban this category of tool as a whole. Some even come with a stand so they can be set up on their side, saving more precious desk space while they’re in use. Still, slimmer and lighter designs are better because it makes the machines easier to store. A compact, lightweight design: Since most flatbed scanners are designed to scan up to legal-size documents, they all take up roughly the same footprint on a desk-a little under a foot wide and a foot and a half long.
In our portable doc scanner and mobile-scanning app testing, we looked for a 90 percent success rate, and we’d be thrilled to see similar results from these machines. When they do, a good flatbed should be able to interpret the language it scans and turn it into searchable text.
It should also be functional, at the very least, but we give bonus points to scanners whose software isn’t painful to use.
That said, it should work with today’s operating systems-specifically Windows 10 and MacOS 10.14 Mojave, but Linux would be nice, too. Quality software: Most scanner software feels ancient, because most scanners available today are really old.
The fastest flatbeds we’ve seen claim speeds of 8 seconds per page at 300 dpi (a typical resolution for office documents), so we’re looking for speeds somewhere in that ballpark. That makes quick scanning all the more important.
A great scanner will also produce accurate color, render sharp (but not too sharp) details, and reliably capture the texture of multimedia items.
Good-looking results: High resolution doesn’t necessarily mean your scans will look good.Ample resolution: A good flatbed scanner should be able to capture images at high resolution, typically 2,400 dpi or higher, without using software interpolation to artificially boost the pixel count.Dedicated film scanners cost nearly twice as much and don’t offer the flexibility that a flatbed provides, so we’d only recommend them to those who only scan film, or demand such high quality that they’re willing to make room in their office for two scanners. And when it comes to film negatives and slides, a flatbed scanner is the only way to go at a reasonable price. Photography buffs, especially ones who shoot film: While portable photo scanners can tear through piles of prints, they don’t scan at as high a resolution as flatbeds.A flatbed-whether standalone or as part of an all-in-one printer-is also the only choice for thick materials like books and magazines. In these cases, a flatbed scanner will provide better results with less wear and tear on the originals. Even our recommended portable photo scanner could damage particularly old or priceless photos. Those who scan delicate or thick material: Portable document scanners are quick and convenient, but their automatic feeders pose serious risk to precious items like historical documents and children’s projects.Standalone flatbeds can go up to 6,400 dpi, which provides a much higher level of detail. (Not to mention dependent on a steady hand.) Portable document scanners and all-in-one printer flatbeds produce better-looking scans but are typically limited to 600 or 1,200 dpi resolution. People who need to scan at very high resolutions: Mobile scanning apps are limited in resolution by your device’s camera, and the image quality is usually little more than serviceable.