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QR Code Printing Guidelines & Best Practices 32 × 32 mm or 1.25 × 1.25 inches, excluding quiet zone (the white space included around the QR Code in the EPS) is the minimum size that guarantees that ALL camera phones on the market can properly read the QR Code. 26 × 26 mm or roughly 1 square inch, excluding quiet zone covers 90% of the phones on the market. - OUR CURRENT RECOMMENDATION The latest camera models, which have improved macro capabilities, can deal with QR Codes that are less than 10 mm (0.4 in) wide and high. For example, an iPhone 4 will be able to scan this size, but an iPhone 2/3.x with 2.0 megapixel camera and no autofocus may not. For good reader accuracy good contrast between the background and the bar color itself is very important. The bar code should have a dark color on a light background. You cannot go wrong by treating the QR Code as line art, using black on white.
Google Alerts are a simple and free way to get regular updates about something that interests you (other than Twitter , which is for another article). Google Alerts will send you an email any time a new web page appears in the top 20 web results or top 10 news results for the terms you specify. As a caretaker and author of a blog or website, you’ll definitely want to be on top of news and happenings that interest you and your blog. I have about 30 alerts at any one time and you can add and delete as you need to since it takes only about 6 seconds to set up an alert (yes, I timed it). You can create up to 1000 alerts! Here are 5 quick ways to use Google Alerts .
Laser plasma volumetric display A stereo display (also 3D display) is a display device capable of conveying depth perception to the viewer by means of stereopsis for binocular vision . [ edit ] Types of stereo displays - Stereoscopy vs. 3D The basic technique of stereo displays is to present offset images that are displayed separately to the left and right eye.
3D optical data storage is the term given to any form of optical data storage in which information can be recorded and/or read with three dimensional resolution (as opposed to the two dimensional resolution afforded, for example, by CD ). [ 1 ] [ 2 ] This innovation has the potential to provide petabyte -level mass storage on DVD -sized disks. Data recording and readback are achieved by focusing lasers within the medium. However, because of the volumetric nature of the data structure, the laser light must travel through other data points before it reaches the point where reading or recording is desired. Therefore, some kind of nonlinearity is required to ensure that these other data points do not interfere with the addressing of the desired point.
April 26, 2010, 8:04 AM — It's been a bit over three weeks since the iPad launched, and the hype has quieted somewhat. We've all seen the reviews that came out right around launch and we've heard all the arguments both for and against Apple's tablet device. It's also been exactly three weeks since I bought an iPad and I thought this would be a good time to share my experience with it.
The web professional's online magazine of choice. In: Articles By Gareth Rushgrove
Microsoft's corporate campus is a sprawling affair, with more than 100 buildings scattered over 261 acres. To make sense of it all, you have to navigate by numbers. The Microsoft Visitor Center, for instance, is in Building 127, north campus, while the Microsoft Conference Center is in Building 33, just down the road from the company soccer and baseball fields. About 4 miles away, however, there is an unnumbered building that is decidedly "off campus." In that building, Microsoft has quietly been developing the first completely new computing platform since the PC — a project that was given the internal code name Milan. This past March, when the project was still operating on the down low, I became the first reporter invited inside these offices.