This helped me to find out that my Huawei phone had "AI Touch" enabled. That apparently is a feature to touch any image with two fingers and the super smart AI finds out what is shown in the picture and where to buy it.

Goes without saying that I immediately disabled this. /shrug

Seems like this was made by Craig Kaplan (https://cs.uwaterloo.ca/~csk/). Had him for graphics while at school there, and he was a fantastic professor

Unconventional, but I played this both solo and with my kiddos. As a multiplayer co-op game it really shines. Granted it's easier than solo, but maneuvering multiple people around a tiny phone was absurdly funny.

Made it to 3 fingers and then couldn't advance as my phone interpreted a 3 finger swipe as a screenshot. I'm counting it as a win since I learned a new feature of my phone!

What's annoying and counter to popular convention / user expectations is that you have to keep your finger in the established path to keep grip of the "ball". (S'pecially given your finger often blocks the view of it).

I think that's the first nontrivial use of multitouch that I have seen in the wild (i.e. that is not basic "pinch to zoom" stuff).

Really cool!

Doesn't work well on phones though, you really need a tablet. When you get to 4 fingers, it starts randomly losing track of a finger or two when fingers get close to each other. I tried two different Android phones and an iPhone.

This would be a fun game with some UX improvements. It's extremely frustrating when the reason I can't finish a puzzle is because my finger slipped off the line and not because I just don't know the solution. I stopped playing because of how frustrating that was.

Errors in Firefox 114.0b9 (Windows), both using mouse and touchscreen:

Uncaught TypeError: can't access property Symbol.iterator, _0x2129b3.changedTouches is undefined touchEnded https://cs.uwaterloo.ca/~csk/slide/slide.js:1 _onmouseup https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.6.0/p5.min.js...

How far does it go? I hit some really hard ones with 3 fingers. I think my phone gets confused if my fingers are too close to each other, which makes it especially difficult.

This also feels like playing a game of Operation [1]. The author just needs to add an annoying buzzer sound whenever you fail.

[1] https://en.wikipedia.org/wiki/Operation_(game)

Some frustrating with this game comes from the slider resetting when moving too fast. With debug touch points enabled I can see that I never leave the path, but it still resets. This is exasperated on Firefox where rendering seems to be slow resulting in constant resets.

Nope, I don't get it sorry, this is so infuriating. A gamified version of all the frustrations I have with mobile UX and my fat fingers.

Multi-touch digitiser acid test. Phone manufacturers take note!

If you find this fun, you might like The Witness, a game with a similar gameplay mechanic as part of its core loop: https://store.steampowered.com/app/210970/The_Witness/

It's not often I get the urge to throw my phone at a wall, but this did the trick.

This is pretty fun! It seems the starting position of your fingers is important, as is the ability to rotate the device. Interesting to see how many mobile HN users there are too.

I love a simple idea pushed far beyond expectation. It's a little choppy on my phone, though (Firefox Android).

"Twister on a touchscreen"

This is awesome. Gimme cookies please so I can pick up where I left off!

Great game. My only wish is that each level had an associated URL (with a nonguessable ID, perhaps). Would make saving and sharing much easier.

Me: "ah ha! I got it, rotation!"

Game: "level 2: moar fingers required"

Me: "damn you fingers! y u get in each other's way all the time??"

Frustrating, but intriguing.

That’s fun! This would be a fun speedrun game.

(To watch. Not to try to actually speedrun yourself. That sounds painful, emotionally as well as physically.)

I would have liked a visual indication for exactly where you went off track. With multiple fingers it’s not always obvious.

I can't play with a convertible laptop with multitouch screen, although it works fine in https://naqtn.github.io/WBBMTT/touch-tester.html . I'm using Firefox on KDE Plasma wayland.

Reminds me of Cross Fingers, an early iOS game I really enjoyed

https://apps.apple.com/us/app/cross-fingers/id337490369

Couldn't get it to work on my Pixel 4a, kept asking to use a tablet or a phone... .-.

Related:

Slide to unlock ... a new puzzle - https://news.ycombinator.com/item?id=36112310 - May 2023 (4 comments)

This is extremely fun! But reloading the page loses your progress :(.

Reminds me of elite beat agents on DS

Not sure why, but I found this gave me a lot of anxiety.

I think maybe the focus and fine motor control needed to keep the ball within the lines…

I wish cookies or unique URLs for level saving was implemented. I restarted multiple times because Firefox and Safari had phantom sticky activations I couldn't override. That final 3 finger twitter was a nice challenge. (I suppose a "reset detected inputs" button would do too).

I made it to a level where you need to use 4 fingers and can't figure it out. This is level [0] could someone give me a hint or tell me how you solved it on mobile?

[0] https://imgur.com/dxC5J0e

For a horror/slasher movie inspired version of this, check out the smartphone game Slice HD - it's "multi-touch-fiddly" the same way as this, but any time you mess up, you get an unnerving impression of having your fingertips sliced off.

Feels like normal sized phones like iPhone Mini or SE 1st Gen are in advantage?

Great game! Though I'm not sure if I solved the last level in the way it was intended to be solved - I wouldn't have been able to do it the way I did it if my fingers were like half a cm shorter

Looks like I finally figured out the reason to have a touchscreen laptop!

Neat! Once it got to three fingers I got stuck pretty quickly, though.

I changed the user agent of the Mac Safari to be that of iOS, and changed the window size to be in portrait, yet it still does knows it’s not a mobile device. How does it know?

It's like traversing a bad "mega menu."

Did you know that "double-click" on early Windows literally meant "click the same pixel twice in rapid succession"?

Basically yoga for your fingers!

Very cool... Unless it doesn't remeber your stage, and so... I cried when I swiped out the Firefox tab by mistake.

Edit: it does remeber, just need to slide once

Speaking of slide to unlock, does anyone know why accepting app installs require double clicking the lock-button instead of sliding?

This oozes creativity! Having to maneuver your device to complete the puzzle makes it a physical game as much as a digital one!

I've been trying to do this for the last 20 minutes on my desktop screen...it's not working.

Now there are finger prints all over my screen...

Any tips?

I like the game but I don't like how it says Slide To Unlock on every page, so a ragequit after a few of them.

This is amazing, so glad there are people doing this kind of thing just for the fun of it. Great idea and execution.

it gets really hard when you need to figure out how to rotate and keep multiple fingers on the screen while sliding

It would be cool if the path animated in reverse slowly when out of bounds and allowed user to regain control.

Beat the entire thing in an hour. This game was creative, challenging, and frustrating. Have my angry upvote.

Very cool. Wish there was a bit more wiggle room ("easy" mode) to give to younger kids to play with

I was thinking, could this be used as a CAPTCHA system? I mean the easier versions, up to 2 fingers

somewhat on topic nd off: gesture interfaces on mobile need to die by fire

* 80% of the time they get triggered by accident, causing some loss of modal state or user data

* other 80% of time they DONT trigger when you DO want, because your gesture wasnt EXACTLY perfect or timed right

Thoroughly enjoyable. Initially I thought the slide to unlock was going to jailbreak my iPhone :)

Just finished this game. Great fun and a genuinely unique game amid a sea of mobile shlock.

This month was a really bad time for me to have just started regrowing my guitar nails.

Lovey. The witness meets Twister, turns into a hack and slash horror game.

Damn it's actually pretty difficult but it was fun nonetheless

That’s just silly. Bravo.

My six year old and I had a wonderful time doing a bunch of these.

Try "osu!" to do this same thing but with music!

amazing, the game eventually froze on me tho ;( ios ff

This is comically annoying with my fat thumbs

I couldn’t get past the super hard captcha.

Oh thats the game!

Why can't I use 2 fingers ....

Really great!

Why is it disabled on laptop??

I wish there was a save button

Great job! Fun and innovative!

This made me laugh out loud

Just amazing! Thank you!

just doesn't work? on my touchscreen laptop in chrome?

well this took a few years off my life

Apple patent infringement lawsuit in 3...2...

I hate it.