Nest vs Twilight: Blue light filter Utilisation & Stats

At Google Nest, we make products that are beautiful, helpful and easy to use. The Nest app is no exception. Control your Nest thermostat, arm and disarm your Nest Secure alarm system, see your home with Nest Cam, and get an alert if Nest Protect goes off – all in one place. And receive notifications on your Android phone or tablet. Nest uses sensors, algorithms, and the location of your phone to do the right thing automatically, turning off the heat and turning on the camera when you leave. Forget to set the alarm? It will notice, and send you a Remind Me alert. Nest Learning Thermostat and Nest Thermostat E Thermostats that program themselves to help you save energy. - Change the temperature from the subway or the sofa using your phone. - See how much energy you used, and why. - View and edit your schedule. - Get extreme temperature alerts before your home gets too cold. Nest Secure alarm system - Arm and disarm your home remotely from the app. - Receive a Remind Me alert if you leave home and forget to set the alarm. - Receive a security alert on your phone telling you what triggered the alarm – a door or window opening, or someone entering a room. Nest Protect The smoke and carbon monoxide alarm that thinks, speaks, and alerts your phone. - Get an alert if Nest Protect senses smoke or carbon monoxide. (Requires Wi-Fi and a working internet connection.) - Silence an alarm from your phone with App Silence. (Nest Protect 2nd gen only.) - See the status of your batteries, sensors, and Wi-Fi connection. - Run a Safety Checkup to test all your alarms at once. (Nest Protect 2nd gen only.) - See your Safety History so you know when alerts happened and why. Nest Cam IQ Indoor and Outdoor, Nest Cam Indoor, Nest Cam Outdoor, and Dropcam The security cameras that let you see your home on your phone, inside and out. - Get alerts when there’s activity, and talk back to get someone’s attention. - See what you missed with snapshots of the last three hours. - Check in 24/7 with crisp 1080p HD video (Nest Cam and Dropcam Pro only). - Get person alerts (or familiar face alerts with Nest Cam IQ) and up to 30 days of video history when you subscribe to Nest Aware. (Subscription service sold separately.) Nest Hello Know who’s knocking. - 24/7 video streaming means you’ll never miss a moment. - Designed to show you everything at your doorstep – people head to toe, or packages on the ground. - Knows the difference between a person and a thing. - Notifies you about visitors, even if they don’t ring the bell. - HD Talk and Listen lets you have a seamless conversation with someone at your door. - When you can’t answer the door, quick responses let you reply to visitors with prerecorded audio messages. Nest x Yale Lock The lock for a more secure connected home. - Instead of sharing keys, assign passcodes to people you trust in the Nest app. - Get an alert when someone locks or unlocks the door. - With Home/Away Assist and Auto-Lock, your door can lock itself when you leave. Some features require a working internet connection, Wi-Fi, and/or Bluetooth.

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Twilight: Blue light filter

Are you having trouble falling asleep? Are your kids hyperactive when playing with the tablet before bed time? Are you using your smart phone or tablet in the late evening? Are you sensitive to light during migraine? Twilight may be a solution for you! Recent research suggests that exposure to blue light before sleep may distort your natural (circadian) rhythm and cause inability to fall asleep. The cause is the photoreceptor in your eyes, called Melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480nm range which may suppress Melatonin production - a hormone responsible for your healthy sleep-wake cycles. In experimental scientific studies it has been shown an average person reading on a tablet or smart phone for a couple of hours before bed time may find their sleep delayed by about an hour. See references below.. The Twilight app makes your device screen adapt to the time of the day. It filters the flux of blue light emitted by your phone or tablet after sunset and protects your eyes with a soft and pleasant red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times. You can also use Twilight on your Wear OS device. Documentation http://twilight.urbandroid.org/doc/ Get more from Twilight 1) Bed reading: Twilight is more pleasant on the eyes for night reading. Especially as it is able to lower the screen backlight far below the ability of the backligt controls on your screen 2) AMOLED screens: We have tested Twilight on an AMOLED screen for 5 years without any sign of depletion or over-burning. If properly configured Twilight causes less light emission (by enabling dimming) with more equal light distribution (dark areas of the screen such as the status bar get tinted). This may in fact increase your AMOLED screen life time. Basics on circadian rhythm and the role of melatonin http://en.wikipedia.org/wiki/Melatonin http://en.wikipedia.org/wiki/Melanopsin http://en.wikipedia.org/wiki/Circadian_rhythms http://en.wikipedia.org/wiki/Circadian_rhythm_disorder Permissions - location - to find out your current sunset/surise times - running apps - to stop Twilight in selected apps - write settings - to set back-light - network - access smartlight (Philips HUE) to shield you household light from blue Accessibility Service In order to filter also your notifications and lock screen the app may ask for enabling Twilight Accessibility Service. The app uses this service only to better filter your screen and does not collect any personal information. Please read more about this at https://twilight.urbandroid.org/is-twilights-accessibility-service-a-thread-to-my-privacy/ Wear OS Twilight also syncs your Wear OS screen with your phone's filter settings. You can control filtering from a "Wear OS Tile". Automation (Tasker or other) https://sites.google.com/site/twilight4android/automation Related scientific research Amplitude Reduction and Phase Shifts of Melatonin, Cortisol and Other Circadian Rhythms after a Gradual Advance of Sleep and Light Exposure in Humans Derk-Jan Dijk, & Co 2012 Exposure to Room Light before Bedtime Suppresses Melatonin Onset and Shortens Melatonin Duration in Humans Joshua J. Gooley, Kyle Chamberlain, Kurt A. Smith & Co, 2011 Effect of Light on Human Circadian Physiology Jeanne F. Duffy, Charles A. Czeisler 2009 Efficacy of a single sequence of intermittent bright light pulses for delaying circadian phase in humans Claude Gronfier, Kenneth P. Wright, & Co 2009 Intrinsic period and light intensity determine the phase relationship between melatonin and sleep in humans Kenneth P. Wright, Claude Gronfier & Co 2009 The Impact of Sleep Timing and Bright Light Exposure on Attentional Impairment during Night Work Nayantara Santhi & Co 2008 Short-Wavelength Light Sensitivity of Circadian, Pupillary, and Visual Awareness in Humans Lacking an Outer Retina Farhan H. Zaidi & Co, 2007