Tag Archives: handwriting

Invited Talk: WIPTTE 2015 Presentation of Sensing Techniques for Tablets, Pen, and Touch

The organizers of WIPTTE 2015, the Workshop on the Impact of Pen and Touch Technology on Education, kindly invited me to speak about my recent work on sensing techniques for stylus + tablet interaction.

One of the key points that I emphasized:

To design technology to fully take advantage of human skills, it is critical to observe what people do with their hands when they are engaged in manual activites such as handwriting.

Notice my deliberate the use of the plural, hands, as in both of ’em, in a division of labor that is a perfect example of cooperative bimanual action.

The power of crayon and touch.

My six-year-old daughter demonstrates the power of crayon and touch technology.

And of course I had my usual array of stupid sensor tricks to illustrate the many ways that sensing systems of the future embedded in tablets and pens could take advantage of such observations. Some of these possible uses for sensors probably seem fanciful, in this antiquated era of circa 2015.

But in eerily similar fashion, some of the earliest work that I did on sensors embedded in handheld devices also felt completely out-of-step with the times when I published it back in the year 2000. A time so backwards it already belongs to the last millennium for goodness sakes!

Now aspects of that work are embedded in practically every mobile device on the planet.

It was a fun talk, with an engaged audience of educators who are eager to see pen and tablet technology advance to better serve the educational needs of students all over the world. I have three kids of school age now so this stuff matters to me. And I love speaking to this audience because they always get so excited to see the pen and touch interaction concepts I have explored over the years, as well as the new technologies emerging from the dim fog that surrounds the leading frontiers of research.

Harold and the Purple Crayon book coverI am a strong believer in the dictum that the best way to predict the future is to invent it.

And the pen may be the single greatest tool ever invented to harness the immense creative power of the human mind, and thereby to scrawl out–perhaps even in the just-in-time fashion of the famous book Harold and the Purple Crayon–the uncertain path that leads us forward.

                    * * *

Update: I have also made the original technical paper and demonstration video available now.

If you are an educator seeing impacts of pen, tablet, and touch technology in the classroom, then I strongly encourage you to start organizing and writing up your observations for next year’s workshop. The 2016 edition of the series, (now renamed CPTTE) will be held at Brown University in Providence, Rhode Island, and chaired by none other than the esteemed Andries Van Dam, who is my academic grandfather (i.e. my Ph.D. advisor’s mentor) and of course widely respected in computing circles throughout the world.

Thumbnail - WIPTTE 2015 invited TalkHinckley, K., WIPTTE 2015 Invited Talk: Sensing Techniques for Tablet + Stylus Interaction. Workshop on the Impact of Pen and Touch Technology on Education, Redmond, WA, April 28th, 2015. [Slides (.pptx)] [Slides PDF]


Project: The Analog Keyboard: Text Input for Small Devices

With the big meaty man-thumbs that I sport, touchscreen typing–even on a full-size tablet computer–can be challenging for me.

Take it down to a phone, and I have to spend more time checking for typographical errors and embarrassing auto-miscorrections than I do actually typing in the text.

But typing on a watch?!?

I suppose you could cram an entire QWERTY layout, all those keys, into a tiny 1.6″ screen, but then typing would become an exercise in microsurgery, the augmentation of a high-power microscope an absolute necessity.

But if you instead re-envision ‘typing’ in a much more direct, analog fashion, then it’s entirely possible. And in a highly natural and intuitive manner to boot.

Enter the Analog Keyboard Project.

Analog Watch Keyboard on Moto 360 (round screen)

Wolf Kienzle, a frequent collaborator of mine, just put out an exciting new build of our touchscreen handwriting technology optimized for watches running the Android Wear Platform, including the round Moto 360 device that everyone seems so excited about.

Get all the deets–and the download–from Wolf’s project page, available here.

This builds on the touchscreen writing prototype we first presented at the MobileHCI 2013 conference, where the work earned an Honorable Mention Award, but optimized in a number of ways to fit on the tiny screen (and small memory footprint) of current watches.

All you have to do is scrawl the letters that you want to type–in a fully natural manner, not in some inscrutable secret computer graffiti-code like in those dark days of the late 1990’s–and the prototype is smart enough to transcribe your finger-writing to text.

It even works for numbers and common punctuation symbols like @ and #, indispensable tools for the propagation of internet memes and goofy cat videos these days.

Writing numbers and punctuation symbols on the Analog Keyboard

However, to fit the resource-constrained environment of the watch, the prototype currently only supports lowercase letters.

Because we all know that when it comes to the internet, UPPERCASE IS JUST FOR TROLLZ anyway.

Best of all, if you have an Android Wear device you can try it out for yourself. Just side-load the Analog Keyboard app onto your watch and once again you can write the analog way, the way real men did in the frontier days. Before everyone realized how cool digital watches were, and all we had to express our innermost desires was a jar of octopus ink and a sharpened bald eagle feather. Or something like that.

Y’know, the things that made America great.

Only now with more electrons.

You can rest easy, though, if these newfangled round watches like the Moto 360 are just a little bit too fashionable for you. As shown below, it works just fine on the more chunky square-faced designs such as the Samsung Gear Live as well.

Analog Keyboard on Samsung Gear Live watch

Check out the video embedded below, and if you have a supported Android Wear device, download the prototype and give it a try. I know Wolf would love to get your feedback on what it feels like to use the Analog Keyboard for texting on your watch.

Bring your timepiece into the 21st century.

You’ll be the envy of every digital watch nerd for miles around.

Besides: it’s clearly an idea whose time has come.

Thumbnail - Analog Keyboard ProjectKienzle, W., Hinckley, K., The Analog Keyboard Project. Handwriting keyboard download for Android Wear. Released October 2014. [Project Details and Download] [Watch demo on YouTube]


Watch Analog Keyboard video on YouTube

Paper: Writing Handwritten Messages on a Small Touchscreen

Here’s the final of our three papers at the MobileHCI 2013 conference. This was a particularly fun project, spearheaded by my colleague Wolf Kienzle, looking at a clever way to do handwriting input on a touchscreen using just your finger.

In general I’m a fan of using an actual stylus for handwriting, but in the context of mobile there are many “micro” note-taking tasks, akin to scrawling a note to yourself on a post-it, that wouldn’t justify unsheathing a pen even if your device had one.

The very cool thing about this approach is that it allows you to enter overlapping multi-stroke characters using the whole screen, and without resorting to something like Palm’s old Graffiti writing or full-on handwriting recognition.


The interface also incorporates some nice fluid gestures for entering spaces between words, backspacing to delete previous strokes, or transitioning to a freeform drawing mode for inserting little sketches or smiley-faces into your instant messages, as seen above.

This paper also had the distinction of receiving an Honorable Mention Award for best paper at MobileHCI 2013. We’re glad the review committee liked our paper and saw its contributions as noteworthy, as it were (pun definitely intended).

Writing-Small-Touchscreen-thumbKienzle, W., Hinckley, K., Writing Handwritten Messages on a Small Touchscreen. In ACM 15th International Conference on Human-Computer Interaction with Mobile Devices and Services, (MobileHCI 2013), Munich, Germany, Aug. 27-30, 2013, pp. 179-182. Honorable Mention Award (Awarded to top 5% of all papers). [PDF] [video MP4] [Watch on YouTube – coming soon.]