I am a product and information designer. I make websites and apps, transport diagrams and signage, direct designers and developers, teach design, compose, play and listen to music, travel and take photos.

I write books:

User Interface

Designing Transit Maps new

I blog:


Everyone is a designer

Handholding as a web design approach

Ugly and neat mail

The dark secret of yellow

The great design of PHP


The letter x is not a multiplication sign

Grids with no gutters

Ideal link underlines don’t care about letter descenders

Unstable alignment

User interface

The “Buy” button should always work

The revolution in the mobile user interface

Implementing a slider well

Immediate feedback when data is unavailable

App Store Icon

Large click areas for small elements

Timed modes

The principle of one link

Why I don’t call myself a “UI/UX” designer


Maps and reality

Transport map design


The future of the web and native apps

The urban transportation in the future

DSLR cameras should become iPhone docks

SIM cards must die


How accidental promises hurt reputation

The mystery of Tufte’s stem-and-leaf plot

When “optional” means “unreliable”

Tech specs as a measure of ineffectiveness

Tomorrow does not begin at midnight

Changing passwords regularly