Usability of Ticket Vending Machines

Most of us know ticket vending machines that are used for public transport. While people who often buy a similar ticket usually have no trouble using them, it can become quite hard for functions that we rarely use or for people who only rarely use the ticket vending machines. Why is it so hard to …

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Do it yourself..

We often observe that something that needed help by an employee is now done by ourselves. Our automobile-affine friends have to fill in gasoline themselves since the seventies in Germany and now even the payment is often done with cards, so that there is no human on site, but only video surveillance, I assume. In …

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Tablet Computers

The idea of tablet computers is actually quite old and it has been tried a couple of times, at least up to prototypes. Probably a certain level of hardware and software was needed to make them both useful and affordable for enough people to become a mass product. This is actually a quite common thing. …

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User Friendliness

I have made an interesting observation in terms of user friendliness. Let’s call it an anti-pattern… I had booked a flight in the internet. Now the ticket was a number, which they sent to me by SMS. I went to the page of the airline and tried to do the check-in, in order to get …

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Usability „Pearl“

I just found this usability pearl: After entering a credit card number as usual with spaces between the groups of four digits, the web page complained like this: Yes, it is easy to allow spaces. Just match the following regex /^\s*\d{4}\s*\d{4}\s*\d{4}\s*\d{4}\s*$/ and then remove the spaces when processing it, but do not let the user …

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