8 ms·
I think speed of the facial recognition will make or break this. If it takes less than 500ms of me staring at it to unlock it could feel fluid enough. Any longe
by dan1234 9y ago
I think speed of the facial recognition will make or break this. If it takes less than 500ms of me staring at it to unlock it could feel fluid enough. Any longer and it'll be annoying every time.
- davrosthedalek 9y ago500ms is a LOOONG time. That's about how long my S8 needs, and I always question whether it works this time. 100ms or so would be great.
- kfriede 9y agoI may be wrong, but I remember reading something that most humans can't notice any lag below 200ms.
- chris_7 9y agoDefinitely noticeable in gaming, 200ms is unplayable.
- vesrah 9y agoDepends on how the game is tuned to handle it. Somehow we all played Quake / UT back in the day with that kind of ping.
- wlesieutre 9y agoFaceID with lag compensation! As soon as it sees a face it starts to unlock based on a fast prediction, then if the authoritative secure side of the chip says "No, authentication actually failed" it rolls back the clock and relocks itself!
- rootlocus 9y ago200ms can refer to network latency, input latency, frame render time, etc.
- aetherson 9y agoYou can notice sub-200ms lag, but for when you aren't specifically watching for lag or firing a series of rapid events one-after-another, sub-200ms seems to be roughly the point where it "feels instantaneous."
- Splines 9y agoIn my experience a little under 100ms "feels" instantaneous.
- coolsunglasses 9y agoThat's absolutely not true. I can tell the difference between 60 hz (16ms) and my 144 hz monitor. I can tell when my 144 hz monitor is accidentally running at a lower refresh rate, including 120, 100, 75, and 60. 200 ms is like a full react/response time for a human to take action in response to input, our actual sense of time is much finer than what our nervous system can make our muscles do.
- chris_7 9y agoIs that because of the faster refresh rate, or because none of those divide evenly into 144 and thus you're getting weird frame stretching? Curious as I just got back into gaming after several years and everyone seems to love 144fps now, wondering if I should upgrade. I have a 1080Ti, so I could presumably render that
- TylerE 9y agoG-sync my dude. No frame stretching/sync tears.
- chris_7 9y agoAh, I was just wondering if running a 144hz monitor at 60hz was like watching a 24fps movie at 30fps... if that makes sense? But the monitor can just switch its actual refresh rate.
- TylerE 9y agoYeah, it'll really trick. Upgraded to a 165hz G-Sync panel recently and it was a revelation after running at a v-synced 60hz for years and years. Order the 1080TI about a week later as the 970 I had wasn't cutting it at 1440p.
- a_t48 9y agoIf you've got a 1080TI you likely don't need gsync - it's only really useful when you're running slower than native refresh rate.
- s_kilk 9y ago200ms is five frames/changes per second, and is definitely very noticeable. You may be thinking of a figure closer to about 12ms or so, which is the approximate threshold of perception for audio lag.
- grrowl 9y agoiPhone X's front camera shoots at 60fps
- dan1234 9y agoLooked like it was reasonably quick in the demo.
- heyheyhey 9y agoAgreed. If it's fast enough to unlock by the time my face is facing the iPhone, then I'm not losing any productivity there. e: But watching the keynote, it's definitely doesn't seem that fast...
- ehsankia 9y agoI disagree. First off, as the person above said, you can start the unlocking process long before it's even facing with with touch-id, as you're taking it out of your pocket. With this, this "timer" starts only when it's fully out and facing you. Next up, in this, it has to be facing you perfectly. You can't unlock it sneakily under the table, you can't do it while someone else is looking at your phone, etc. Lastly, you still need to manually swipe to actually open the phone, so it's not like you're not using your finger either. If at least you could unlock it without using your hands that would be something. At the end of the day, I still want to see properly reviews of what the actual successrate is too. It's not all about speed, if it fails 5% of the time, that's extremely annoying.
- balls187 9y agoit looked pretty slow on the demo. In the order of 1500ms. TouchID is much faster.
- craigyk 9y agoThe unlock itself actually looked pretty fast... it just seemed a bit awkward that it had to be paired with a swipe to unlock.
- agumonkey 9y agoTrue, it's three things: - attention - faceid - swipe And no cue to know if faceid worked before swiping. I couldn't see cues (maybe I missed them).
- nixy 9y agoExcept for that large padlock icon that shows the unlocked state when Face ID has identified you?
- agumonkey 9y agoAight, I failed, but it's really not how I like such information conveyed.
- sjwright 9y agoAgreed. I'd want the phone to look "more asleep" when locked, e.g. a dimmed or vignetted background photo which would pop to life when unlocked.
- agumonkey 9y agoSomething that "pop" yes. A border flash, a hint at the bottom that means "you can swipe now". The [un]lock icon can stay but it's to high focus to be a good UI. To be honest, with the full glass, I expected something like.. a full screen fingerprint scanner (have no idea if it's feasible at all). I thing TouchID is the best biometric input for casual operation.
- agumonkey 9y agoWhat about unlocking without looking at it ?
- robotresearcher 9y agogone away.
- c0ndu17 9y agoI'm guessing you can tap on the padlock to enter your passcode.
- agumonkey 9y agothat requires paying attention (and probably looking at it, even if you know the location, a screen is too flat), unlike the home button.
- rmrfrmrf 9y agoTouchID always takes a "slightly-perceptible" amount of time to work, so any improvement over that would be fine with me.
- PeppermintGrade 9y agoEspecially if you have several banking or investment related apps that use touch-id.
- Joeri 9y agoThat's probably why they make you swipe up. The gesture takes 500 ms at least, and it only has to unlock by the end of it.