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Form validation and usability techniques

The guys at Signal vs. Noise have a new book coming out and they posted a link to a sample chapter in PDF format. It’s worth downloading and checking out, especially for the plain advice and tips for formatting and validating phone numbers.

I have found that phone number validation is really important, especially in web-apps. If you restrict the formatting of phone numbers to only a specific format, it just makes it difficult to use. A really good example is the AT&T Send-Text Message page. You can enter any string of digits and it will automatically format according to AT&T’s desires.

By Chris Tingom

Principal of Tornado Design, a Phoenix, AZ based web consultancy

0 replies on “Form validation and usability techniques”

Please don’t judge the Vein by the picture of our three group macine with only one portafilter locked in. We were in the middle of cleaning it to use Larry’s PF Thermometer. It’s still a great picture Chris, I was looking at it and thought people are gonna think we leave the PFs out of the group.
I see Jason like Simonelli.
The Laranzato’s ok, but the boiler runs a little cool as Larry helped us find out, even at 1.45 boiler pressure. Jim and Martha wanted a better machine and know that the Laranzato has it’s limitations, but, well, it wasn’t in the budget. I’m pulling some of the most awesome shots on this machine, it’s just alot of work.
I am liking the the simplicity and price point of the Synesso lately.

Those bubbles look like the result of coffee dispensed from an air-pot.

The simonelli isn’t just a NS, it’s the Aurelia. It’s the ONLY NS I’d consider worth seriously looking at, and even then, there’s some stiff competition.

I worked on the Aurelia a few times — along with others — and really love it. I agree, Jason, that there is alot of great stuff out there. I feel very comfortable on the Aurelia because of it’s ergonomics..

..be bold

[…] Arizona Coffee posted some photos of their trips to coffee shops around Tucson.   I dunno… you may not find that as interesting as I do.  LOL  Chris had some problems at Espresso Art – they mocked him.  Their website is equally unimpressive… Where are the tales of their brewing techniques and all the stories about how they have their virgin beans imported fresh and all of that?  There’s nothing there. […]

Maybe that’s the answer to the mysterious bubbles. They had a “hardness” to them unlike what you would expect from an airpot. After more than 15 minutes they were still there. Maybe the airpot was rinsed in water that contained oils or grease from another kitchen utensil?

Don’t know what the bubbles are at Ragaing Sage. But since I live right nearby and go there frequently I have to say they are definitely one of the best cafes in Tucson. Excellent home baked goods. Their espresso is way better than their drip, which unfortunately isn’t true of lots of places.

I was served a terrible espresso at Espresso Art – way bitter, no crema. Yeah, it’s weird that Raging Sage keeps their beans in a fridge, not a good idea. So I’ve since been trying out beans from other local roasters. Roaster X is really nice. But just bought a pound of Rocket’s Classic Espresso at Coffee Vein from Mike Trevino (really nice guy). Gonna give it a try.

I see in your top photo that you are using a Laranzato ME-2 machine along with the Aurelia from Nuova. What features do you like about each one of them? Why do you have two machines at the shop?

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