The Scribble Pen, you may remember, is a project by bay area startup Scribble Technology that puts a color sensor and multiple ink reservoirs in a pen. We’ve talked about it before, right after ...

In the early 16th century, the Renaissance master Michelangelo drew a simple scribble. The pen-and-ink sketch, which is just a few lines, depicts a marble block with the word simile (Italian for ...