The Problem With Fever Detecting Thermal Sunglasses

By Charles Rollet, Published on Apr 15, 2020

While the media has promoted using thermal sunglasses to detect fevers, this approach has fundamental problems and, at best, is health theater.

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Inside this note, we examine the claims and reported issues, including:

  • Who is offering these sunglasses, most notably Rokid
  • What it claims to deliver
  • What reported issues have been found
  • What fundamental problems this approach suffers from
  • Why it has been positive press for Rokid
  • Rokid's response to our questions
  • How this hurts public understanding further

Rokid ********

*****, ***** ** ********, is * *** **** startup ******* ** **** which ********* $***+ *******. *** ******* *********** in *** ***** ** products:********* ******* (**) *******, ******* ** ****** Glass, ******** ********(******* ** ******'* *****).

IPVM Image

***** ** *** ********, Rokid *** *** ***** any ******* ****** ********* for ***** ** *********, the ******* ********* ** IPVM.

Claimed ********

** ***** **,***** ********* * ****** post******* **** *** "**" thermal ****** ********** ******** was ***** **** ** security ****** ** ******* visitors ** *** **** National ******* **** ** Hangzhou, ********:

********** ****** *********** ** less **** *.* *******. Can ****** **** *** hundred ****** ****** * minutes *** ******** ****** can ****** ********' *********** at * ******** ** one ***** [***** * feet].

********* ** *****, *** sunglasses *** ** *** by ****** ******* ****** the **** *** ******** visitors, ************* ******** ***** with **** **** *****.

*** ********** *** **** used ** ****** ********* at *** ****'* ********, where ******** **** ** line ** *** **** a** **** ********** ***** health ******,*****'* ********* ******.

Rokid ********* ******

***** **** **** * spec ***** ** *** T1 ******* (***** ** were *** ********* ** disclose ** ****). *** sheet **** * ****** of ******, *********:

  • ** * * ***** (3.3 ****) ********, ******** is ****** ± *.*°* for ******** *** ****** ± *.*°* *** *******. But ***** **** **** IPVM: "*** *** ********* can ***** ******* ********. At * * **** distance, *** ********* ** within ± *.*°* *** outdoor ******* *** ****** ± *.*°* *** ****** reading; ** *.* **** distance, *** ********* ** with ±*.*°* *** ******* reading *** ± *.*°* for ****** *******. *** furthest ********* *** ******* up ** *.* ****. "
  • ******* **** ******** **********, Rokid's **** ***** ******: "A ******* *** ** sent **** ** *** as * ****** [** feet] **** **** ******** body *********** ** ********."
  • ***** **** ***** ******* "detection **** ** ***** is ***% **** * reading ******** ** **.*%." But ***** ***** **** us ** *** "*************", and **** ***** ** say **** "******* ******* can ** ***% ****-**** generated *** ********* ** the ***** ******* ******* any ********* ******".

IPVM Image

Reported ****** *****

******* **** ************ *********** ****** *** "raised ******" ***** *** accuracy ** *****'* ******, but *** *** *********. But ***** (***-*****) ***** detection ******** ********* **** raised ******** ** *****:

  • * ***** **** ***** shows ******** ****** ***** a *******-********* ****** ** downtown ******* *********** *** ********* **** **°* (***°*), indicating * **** **** fever, *** ***** *** temperature *** ****** ** 36.3°C (**.*°*) **** ******** with * ******** ***********. The ****** ** **** by *** ******** ********* ***.
  • ************ ****** ***** **** ******** getting **°* *** **°* readings **** * *******-******* access ******* **** ******** despite ****** ** *****, with *** ******** ***** explaining **** *** ******** due ** *** ******** in *** ***.

Fundamental ******** **** ********

***** *** ***** *********** problems **** *** ******** approach:

  • **** **** *** ***** and *** ******** ******, it ** **** ** get * ****** **** / ******* ** *** subject's ****. ***** ******* of * **** *** likely ** ****** ** lower ******** **** ***** effectively **** ** *********** fevers ** *****'* *** demo ***** ***** *****:

  • ** ** ****-*** *********** like * ****, ************* conditions **** **** ** sunshine **** **** *********** distorting ******* ** ********. Rokid **** ** ***** solution "** *** *****-***** and ****** ** **** in ******* ***" *** does ******** ********** ** light *********, ***** ** day. ******** ****** ***************, fluctuations ** ******* *********** and **** ****** ******** will ***** ******.

Rokid ******** ** ****

***** ****** "** **** done **** ******** ***** the ********" *** "** general ******* *********, *** temperature *********** *********** ** very ******."

***** ******** **** ******* tests ** *** *******, which ** *** *** permitted ** **** ********. The ***** **** *** three ******* ********* ** sunny/good ********** (***** **** non-direct ********, *** ** the *****, *** *** in *** ****) *** one ****** ********, ** different *********. ********** ** the ******** **** **********, it ** ******** ** get **** ******** **** high ********, *** ***** is ******* ****** ********* weather, ***********, **********, *** positioning ** ****** ** the ****.

Outdoors **** **** ** ** *******

********* **** ** *** large ********* ** ******* fever ******* *** ************ such *******, ** *** move, ************. **** ** a ********** ** *** engineering ********* **** **** an ******** ** *** reliable, ******* **** ***** would ** *********** ****** for **** ** ********.

Positive ***** *** *****

******* *** *********** ********, it ***** *** ****** for *****'* *********. **** if *** ******** ** abandoned ** *** ****** to **** *** ** accuracy ****** *** ********* improving *********** **********, ***** has ********* **** * slew ** **********, ******** press ***** ** *************** ** *******:

********** ***** ******* *** hungry *** ***********-******* **** news, ********* ** ******/************* coverage ** ************ *********' claims. **** ******** **** for ****** ********, ***** enjoyed ******** ******** ******** until ** ***** ** had***** *** *************** ***** *** ***** kind ** ******* ***.

Hurts ****** ************* ** *******

***** **** *** ** good *** ********* ********* this **** *****, **** increases ****** ********* ** unvetted *** *********** ******** of ********* ****** **** more ****** ***** **** this ********** ** **** powerful **** ** ******** is.

Comments (2)

***** ** ** **** sort ** ***** ** meant ** **** *** impression ****** *** ***** monitored, ****** **** ******** doing *** *** ****'** intended ** **. *'* more ** * ***** guy, *** * *** see *** ********** *** governments ***** ** ******* to ******** ****** **** everything **** ** ****, thanks ** **** *** tech.

*.* * ******** **** no *********?

**** ***** **** ********** thru *** **** *****?

** ** *** ******** has * *****, ******** else **** ****** ****? :)

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