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69

I'm not exactly sure how your app works, but from what I understood, I would use a color like grey for the OFF buttons and a brighter color (the primary color of the application perhaps) for the ON buttons to avoid your problem. Also I'd make use of icons to serve as an indication for Hot/Cold.


67

Because of: Familiarity: Everyone has more or less learned to use it and a lot of users don't even need to take a look at at individual keys to type. Although not physically, it's present and has the same layout across devices. Usefulness: You can perform an incredible HUGE variety of task just with a keyboard. Accessibility: It provides an accessible ...


62

The historical reason is that that's what the spacebar does in more, the lowest common demoninator (and probably oldest) of text pagers. In more, it makes sense to map the largest key on the keyboard to the most common action: show the next page. In the glory days of more, you couldn't count on mouse scrollwheels, page down buttons, or sometimes even arrow ...


52

There is no good way Here's the design logic: Backgrounds are perceived by users as backgrounds, i.e. inert and uninteractable. This is obvious. In order to communicate to users that the background is tappable, you need to tell them that. The most reliable way of doing this is to sign it, i.e. Tap to continue. Note that trying to do something fancy ...


52

Red can be used for ON, most sockets use this color when they are on : I would recommend BRIGHT RED for ON and DARK BLUE for OFF. The brightness difference between the bright red and dark blue will also indicate ON/OFF. Also use round shape because it resembles more with LED lights, used for power ON/OFF in many devices.


48

There is at least a single benefit for those not using a mouse - Normally you are able to tab between input elements using the keyboard, this is an indicator as to which element currently has your focus.


44

Do not use colors to indicate that the system is ON or OFF, use instead a linguistic code, while use an iconic code to comunicate the HOT/COLD state. Here I used a thermometer with different colors (i did not use the snowflake icon since it communicates more a sense of active cooling -like a freezer-, rather than a passive dispersion of heat -like some ...


43

Rewobs answer is already excellent, but for a deeper understanding it's valuable to consider what alternatives we have. Chorded keyboard Already in the mother of all demos in 1968 an alternative input device was proposed: the chorded keyboard (though the concept is even older). The idea is that instead of moving your fingers to dedicated keys one at a ...


40

See also iTunes 9 or later. It adds the ability to do "nested" AND / OR expressions, akin to how a programmer would do it with parenthesis:


37

Create a repository with actions from where they can be dragged to days. The question is what happens when you try to drag an item to a day that is already occupied. Replace the item and send the previous one to the repository Swap both items. In this case, if you start with a preset for every day you don't even need the repository.


36

Don't use meaningless imagery just for decorative purposes. They'll get ignored, it's clutter, it needs to be downloaded by the end-user which means the site will be slower to load... There are numerous reasons not to use such images when they don't have any purpose. However I think you are overlooking one option: Typography. Good typography can be ...


34

The main problem non-technical users have with Boolean logic is understanding the difference between AND and OR because it doesn’t always correspond to natural language (e.g., “show me orders from New York and New Jersey” almost certainly means Location = NY OR Location = NJ). Often users tend to interpret "or" to be an an exclusive OR. Then there’s the ...


30

The spacebar is the largest key of your keyboard, and is consequently the easiest one to interact with. For that reason, apps tend to use the spacebar for: a simple action: where no input, precision or direction is involved. a repeated action: the spacebar is the easiest to press several times in a row. a "forgivable" action: if you accidentally press it, ...


30

Yes, and it's called finger-friendly. Smaller touch targets are harder for users to hit than larger ones. When you’re designing mobile interfaces, it’s best to make your targets big so that they’re easy for users to tap. But exactly how big should you make them to give the best ease of use to the majority of your users? Many mobile developers have ...


29

The style of shapes can alter the look and feel of the application and thus change the user experience. Apple got praise with their rounded corner movement showing that a different style shape can lead to a better User Experience. Lets look at examples Which image is easier to follow? Which Image would you prefer to look at (aka is easier ...


26

Another option is to use a semi-transparent layer on top of the images for text which allows you to control the colour and hue of all the images so you can have a more consistent looking portfolio (if desired). The Verge uses a lot of colour gradients which may of may not be to your taste, but it can be an effective way of combining both text whilst being ...


23

What's the issue with giving the user a predefined region of space with some sort of indicator that that space is where they should tap to continue - a button with an appropriate continue icon (the right-ward arrow is popular), for instance? From a UX perspective, you're removing a level of complexity by removing an unnecessary choice, namely where on the ...


21

Their usefulness scales beautifully with experience and developed skill Someone who knows only a little bit of numbers and letters can use a keyboard for a variety of tasks, even without knowing about the importance of the "shift key". As each button on the keyboard is labeled clearly with what each key will output when pressed, a person can guess quite ...


21

Think about what it means to be staring at that loading spinner: The user doesn’t want to do any of this. He has no interest in managing his utilities. It’s something he might have to do from time to time, but he’s hardly happy about it. This had better be a smooth experience. The system has failed. Few people go straight to support without a problem ...


20

This is a pretty broad question, but if you're looking for some resources, here are a few I would suggest: Apple iOS UI Design Dos & Don'ts Apple: Designing for iOS7 Android Design Guidelines Designing Mobile Interfaces by Steven Hoober and Eric Berkman Mobile Design Pattern Gallery: UI Patterns for Mobile Applications by Theresa Neil Microinteractons: ...


19

This one tested well with both the technical and non-technical users and can generate pretty much any possible database query... The benefits are that it's very clear and a user can drag and drop (or delete) any expression or group of expressions in the tree. The down side is how much space it consumes.


19

I don't have any evidence that this is the reason the spacebar is used for page down, but back in the day when IBM was setting PC design standards (that still heavily influence the design today), the original IBM AT 84-key keyboard from 1981 (IIRC) did not have page up/down or dedicated arrow keys (they shared the number pad): The standard 101-key ...


19

These are called 'Dark patterns' and these can be used in many different ways to influence users behaviour. Social networks as you mentioned put the logout button in a separate menu, Facebook in particular hide the 'deactivate' option very deeply in a settings structure. Some people also believe that you can never delete your Facebook account, when in ...


18

Read this article on font legibility. At least look at this graph of on-screen reading times (shorter line = faster/better): The differences aren't that large, but it's worth noting that Times (a serif font) came in second place. For medium-large text consider ClearType (or whatever Apple's alternative for it is). For very small text (~<= size 10.5, ...


18

To have a less formal tone to your users, if this is a learning application (asserted from screenshot), I would use what you really write in your question: Your next step: That way you would get users feel more relaxed and more focused on learning.


18

The idea behind this bar can be traced back to Gestalt's law of similarity which states: Elements within an assortment of objects are perceptually grouped together if they are similar to each other. This is why you shall see two columns in (a) and two rows in (b). The latter also demonstrates that colour wins over shape (in this specific example at ...


17

Wikipedia seems to be popular with the information so far... :) So here's info from the history section of the page on caps lock The Caps Lock key is a modified version of the Shift lock key that occupies the same position on the keyboards of mechanical typewriters. An early innovation in mechanical typewriters was the introduction of a second ...


16

The term used for these format-constrained inputs is masked inputs or mask input. Here is a demo which includes a broad range of masks (date, time, phone number, etc). If you Google 'masked input' you will find plenty more examples. http://igorescobar.github.io/jQuery-Mask-Plugin/ And a screenshot for posterity in case the link dies in the future. It ...


16

Using words isn't a bad idea at all. It's the most 'easy to understand' way for everyone. You can make a dropdown list after the input, containing: No unit Thousand Million Milliard The "no unit" option is for small amounts. Plus you can give people the chance to manually type all the zeroes if they want (or even the mathematical abbreviations, like ...


15

You should always use the word which is common among the users, no matter if it is the technically correct one or not. In Why the electronic land registry failed, Lauesen gave a very vivid example of this. This is a story of a large system which had to be made mandatory for use in real estate purchases in the whole of Denmark. The requirements were ...



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