Dotty "Hot Or Not" Elevated Body Temperature App Tested

By: Ethan Ace and Rob Kilpatrick, Published on Jun 01, 2020

What if you could take an existing phone or tablet and transform it into "fever camera"? That is what DottyAR is doing with their strangely named "Hot or Not" app. But how well does it work?

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We bought an add-on thermal camera and connected it to one of our tablets to see how well the app worked.

Inside this report, we explain:

  • How accurate are body temperature estimates compared to oral and IR thermometers?
  • How does Hot or Not compare to using the FLIR One Pro directly?
  • How does Hot or Not detect or miss elevated skin temperature?
  • How does the camera handle hats, masks, and glasses?
  • Can it measure temperature on the move?
  • How does subject distance change measured temperature?

Executive *******

** *** *******, *** Hot ** *** *** was **** ****** ** use, ********* ****** ** setup. *** ***'* ***** face/pupil ********* ***** ******* measurement ** *** ***** canthus *** **** ****** the **** **** ***********, producing ********** ************ **** masks ** **** **, unlike ****** ***** ****** use ******** **** ***********, and ******* ***** ****** caused ** ************* ** physiological ******* ********** **** temperature ** ***** *****.

*******, *** *** ************ underreported ************, ** ~*°* or ****, **** ******** and ******* **** ********** temperatures *******, **** ** way ** ****** ***** threshold ** ***** *********** offset ** ********** *** these ******, ****** ** other ****.

********, *** ******* ***** to ****. *** *** does *** ******* *** work *** ****** ******* or ** ******. ** such, **** ** **** comparable ** * ****** / ***** / ******* type ********.

DottyAR ******** / ***********

***** **** **** **** they *** ********** ******* as * *** ****** market *** *** ** Not, ** ***** ***** have ****** ****** *** low-cost ********* ******* *** are **** ****** ** spend *** $**,***+ ******** to ******** **** ******.

***** ****** *** **** solutions *** ****** ** ways *** ******** ** yet ** ********** *********. These ********* ***’* ***** over ********, ***’* ************, or ***’* ***** ** sue. **** **** **** screening ********* **** *** really *** **** *** available ** ***** *******. When ****** ** **** a ********** ***** *** can *** ******* *** noise ** ***** ********* and ******** ********.

Not ******** ********* ** *** / ******* *** ***** ******** ******

**** **** *** ** Not ** ********* *** publicly ********* ** *** iOS *** ***** *** must ** ******** ******** from *****. **** ******* that **** *** ********* blocked **** ********** *** app ******* ****'* *** license ********* ******** ******* or ******-******* ***.

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***** **** ******** **** they *** ****** ******* for ***** ****** ********, but **** *** ********* which, ******:

** *** ********** *** developers, ** *** ******** agnostic ** ******. ** want ** ****** *** hardware **** ** ******** available *** **** ***** certain *********** ******** *** end ***** ****** **** do ***** *** ********* much **** ** ** to ****** **** ***** guidelines *** ****.

Pricing / **** *** **** / ***-*******

*** ** *** ******* for $*** *** *** month *** ****** **** volume ********* *********. *** FLIR *** ***/*** ** are **** ********** ($***/$***). This ******* ** ************* lower **** **** ***-**** screening *******, **** ****** **** ($*,***). *** ******* ** month ** *****, ******** cancelling ** *** ******* if ** **** **** screening ** ** ****** desired.

************, ***** **** **** Hot ** *** ** also **** *** *** by **** *** **********, noting **** *** ******* with ******* ************* ** no ******* ****.

Simple *** *********

*** *** ** *** app ** ******, ******* directly ** *** ********* interface, **** ** **** controls. ***** *** ** options *** ***********, ********* setup, ******* ***********, ** other ******* **** *** common ** ***** *********.

**** **** ***** ** example ** *** ********* interface:

**** ****** ******** ** us ****** ******* ******** a ***** *********** **** which ***** ** **** to ***** ******* *** thermal *******, ***** ***** says ** *** ********* required, *** *** ** our **** *** ** misalignment. ***** ***** ** include **** ** ****** public ******.

Compared ** **** *** ***

*** ** *** ********* human *********** ************ ***** were **** **** ******** than ***** ******* *** *** ****** alone. *** ********* ***** 3 ********** **** ***:

  • ******* ***** *******: *** app **** **** *** pupil ********* ** ********* proper *********** *********** ****, centering ** *** *******'* inner ******* *** ****** to ***** ***** ****** the **** ** ***********.
  • ***** ******** ****** ***** subject ** **********: ***** also **** **** *** several ****** ** **** subject ** ****** ******** temperature, ***** ***** ** eliminate **** ** *** outlier ************ ******** ** others *** ******* * simple **** *****.
  • ** / ****** ******* to ******** ***********: *******, Dotty's *********** ********** ** based ** * *********** neural ******* *** "************* algorithms" ***** **** ******** accuracy.

** ** *** **** Measurement / *-* ****** Scan

*** ** *** ******** users ** **** *** stand *** ***********, ****** 2-3 ******* *** **** (shown *****). **** *** person *** ** ******* at * ****.

**** ********** ** **** through *** ***** ** any *****, *** ****** simply *** *** ****** a ***********:

Face *** ***** ********* ********* *********** ****

** ********* *** ****** temperature *********** ****, *** or *** ******** **** and ********* ******** ********* (highlighted *****). ***** ** the ******** *** ***** of *** ******, *** app ************* ********** *** measurement ****, * ********* ranging **** ***** *** eyebrows ** *** ****** of *** ****, ***** the ***** ** *** eyes.

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Inner ******* *********** ***********

*** ** *** ******** only ****** *** ************* detected *** ****** *** subject's ****, ******** ***** areas ** *** ****. Because ** ****, *** elevated *********** ** **** of *** ********, ******, or ***** ***** *** generally *** ******** ** our *****.

*** *******, *** ** Not ******** *** ******* below ** **.*°*, ******** his ***** ***** *** been ****** ** * hot ***** ****** ** 102.4°, ******** ** ** IR ***********.

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** *** ******** ****, this ***** ** ***** common ***** ****** *** to ************* *******, ******** activity, ** ***** ******* which *** ***** *** or **** **** ***********.

*******, ** *** ******* is ******* ******* ** the ****** ****** **** not ****** *** ***** canthus, *** ****** **** fall **** ** *** next ******* ****, ********** the ******* ** ****** or ***** ******.

******, ******** ******* ******* were ******** ***** ** 0.5-1°F ** *** *****, as *** ****** ****** to **** ***** **** the **** ***** *** canthus ** *** *******.

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No ********** ********** / *******

****** **** ********* *******, Hot ** *** **** not ***** ***** ** adjust ***** **********, ******* fixing "**** ***********" ** 100.4°F. ***** **** **** they ***** **** ********* best *** ******* *** and **** **** ****** users ******* ** **** setting ***** ******** ***** alerts ** ****** **********.

************, ***** ** ** option ** ******** ******/*** temperature ******* ** ******* for *** ************, ****** most ********* *******. ******* of ****, ***** **** no *** ** ******** compensating *** *** ********, a ****** ***** ** our ******* (********* *****).

Missed ******** ************

** *** *****, *** or *** ****** ******** inner ******* ************ ** over *** *******, ********* subjects ** ~**-***°* ** repeated ********. ****** ************ (~101+, ***-***** ****** *** up) **** ************ ********, similar ** ***** ******* we **** ******.

Measurements ********* ***** **** ******

** *** *****, *** or *** ********* ******** subject *********** ** ~*+°* lower **** **** *********** measured ** ** *** ear ***** ************. ***** measurements **** ***** ** ~1m ********, *** ***-***** of *****'* *********** ***** (though ******* ********* ******** in ******* **********, ********* below). ************, ********* *** same ******* * ****** time ********** ******** ** a ****** ***********, ***** below.

Measurements **** **** ********

** *** *******, ******** temperature ******* ******* **** distance. *** *******, *****, at *****'* ******* *********** range (*.**), *** ******* is ******** ** **.*°*, dropping ** **.*°* ** 1m *** **.*°* ** 1.5m. ***** ******* **** consistent ****** ******** ********.

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Measurements ******* **** **** *** *****

*********** *** *********** ********** by ******** ******* **** since *** ****** ******* on ***** ***** ** the **** ****** *** eyes.

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*********, ** ******* *********** on ***** ***** *****, resulting ** ****** ********* results, ***** *****:

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Tablet / ****** ******** ******

** *** *******, *** FLIR *** *** ****** lasted ~*-* ***** ** a **** ******. ******* of ****, ***** **** either ****** ** *** charging ** **** ** plugged ** ****** ***, which **** ********** ******* in ***** *************.

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** ***** **** *** clarification ** **** ******* charging ****** *********** *** have *** **** **** us **** ******* **** is ****** ** ******* over **** ** *** camera ** ******* ** full **** *** **** it *** **** ********, which ***** **** ************. In *** *******, ** did *** *** * practical ********** ** ************ while ******** **. ***. Dotty **** **** **** have *** **** *** issues ******* *** ****** plugged ** ***** ** use.

** ******** ** *** camera, *** ****** **** be **** ******* (****** it ***** ******* ***** longer **** *** **** One), ***** ******** ********** logistical ****** ******* *** FLIR *** ******** *** its ******** ****. ***** says **** ******** ******** cases/cradles *** *** ****** for ******* *** ****** charged ********** * **** day ** ***.

Dotty ********* *** **** ********

*****'* *** ****** **** they ****** ** ******* by **** ** *** FLIR ******* **** ***** app, ********* ****** *** of ***** ********:

******** *** **** ** innovation **** ***** *** developed ********* **** ******* imaging ********** ** ***** sighted ** ** **** and *** *.*. *******. There *** ******** ** people ** ********** ******* of *** ******* ****** and ***** **** **** low **** ********** ********* like ***** ***** *** proven ** **** **** FLIR ******* ** * time ** **** ** increase *.*. ******* *** help ****** ** ****.

** *** *** ****, Dotty ** ****** ***** risks ** ******* *** inner ******* *** ********* subjects ** **** ******** to **** ***** *********. On *** ***** ****, there *** ***** ***** of ******* ******** ************. Whether ** ***** ***** to ***** ** ********** markets ** ***** *** their ******* ******** ** something **** *** ** debated.

Comments (5)

*** *** *** ** Dotty's *** ** *** app ****. ***** *** Ethan & **** *** the *******!

*** ****** ******** ***** be *** ** ***** is * ******* ****** crowd ******* ** ********** for ************* ********** **** a **** ** *** airplane ********* *** ****** crowd. ** ****** *** majority ** * ***** is ******* *** ******** temps *** *** *********** outliers.

** *** **** *** many **-**** ***** **** the *********** ******* ** part ** ********* ******** temperature ******* ** **** push *** ********* **** temps ** **** *** for * *** ****** readings ***** ** **-********** around ****** **** **** values. *** *********** ***** 100F ** ******** **** the ***** ****** **** considered ** **** *********** outliers *** ***'* ****** the ******* *******.

*** ****** **** ** the ****** *** ****** were ***, *** ******* for ****** ************* ** the ******* *** *** challenges ** ************ ******** temperatures ** ***** ********** for *******. **'* **** hard ** *** * normal ***** ******* ******* with **** * ******* of ****** *****. **** is ****** ** *** case ** *** ******.

****** ***** **** *** taking *** **** ** dig **** *** *******, keep ** *** **** work.

*** (*** ***** *******)

** ***, * ***** your ******** ** *******. In ****** ** *** second *********: '** *** push *** ****...'. **** does **** **** ** the ****? *** **** is *** ****? *** does * **** **** that *** **** *****-***** temps **** ****** *** the ****** ** ******** a **-************* ****? ***** most ***** **** ** normal ***** ***** ** this ******** ** ****** at *** ***** ** each ***? ** ***** that *** ****** ****** identify ** *** **** that **'* ** **-************* mode ** *** **** can ****** ******** ***** in **** **** ** maybe *** ****** ***** taking ************ ****** **-*************. Can *** ****** ****** stable ** **** ******* situations? **** ************ **** is *********?

** ******,

*'** ******** *** ** IPVMs ******** **** ** article ** **** **** the ****** ****** **** temp ******. ******** ***** 100F ** ***'* ***** in *** *********** *******, we *** **** ** outliers.

*** ****** ****** ** the ******** ***** **** of *** ****** ******* population ** ******** **** like **** ***** **** time (**** ** ****), and **** ******** *** the ********* ******. *** issue **** ******* *** fevers **** *** **** with * *** ***** bottle ** * **** dryer ** *** **** is *** *** ** cooling **** **** ***.** through ** *** *** that *** *** ****** distribution ****** **** ** reality. **** **** * or * ********* ***** won't ****** **** ****** distribution **** ****. *** need * ****** ** different ******.

*** **** ********** *** our ****** *** ******. It's **** ********* ************ during ******* **** ***** to ** **********, ** the **** ***** ****'* not ** *****.

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** *** *****, *** or *** ********* ******** subject *********** ** ~*+°* lower **** **** ***********...

****** **** **** **** need ** **** ** up * *****...

******’* ** *** ***** time **’** ***** * +1 ** *** **** just ******* :)

*** ** ******** ********* around **.** ***** ** a ****** ******* *****. This ******** ******* ********** shows * ****** ************ at *** *** ***** America, ** ** ***** take ** ** **** a ***** *** ***** America. **’** ******** ****.

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