Temperature Tablet Shootout - Dahua, Hikvision, ZKTeco, TVT + 5 More

By Derek Ward, Published on Sep 30, 2020

Temperature tablets, aka terminal or stations, have emerged as a 'low-cost (~$2,000) alternative to fever cameras, looking as a comparable bargain.

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However, IPVM testing of 9 different tablets has shown significant problems, most notably widespread rigged temperature measurements.

Inside this report, we shootout the following devices we have already individually tested:

Moreover, this covers a wide range of various relabellers using Bems, Telpo, TVT, etc., see Exposing Fever Tablet Suppliers and 40+ Relabelers

Inside this report, we answer:

  • What devices had the best and worst temperature accuracy?
  • What accuracy problems did the devices have?
  • What key factors drive accuracy?
  • How did usability (such as height, distance, and time) vary in measuring subjects across devices?
  • How well did mask detection work?
  • Which software had better or worse capabilities?
  • What operating systems and potential cybersecurity vulnerabilities did we find?
  • What, if any devices, we recommend?

Not ***********

**** **** *** ********* any ** ***** *******. Widespread ******* ** ******** found ** *** ******* means **** ** ** not ***** *** *******. While ****** *** ******* are **** **** ** returning '******' *********** ********, all ******* ******, ** varying ******, ****** ******** temperatures.

** *** *** ******* about ***** * ***-**** way ** ******** ********* temperatures, ******** *****/** ***/**, ** $** - $200, * ******** ** the ***** ** ***** tablets, ** ******* **** (******), * ********* ***** system *** ***** *** same ***** ** ***** tablets. *** ** ***** devices *** **** ******** and **** ************* ****** but *** **/** *** Seek **** ***** ** fairly ****** ************ ** our *******.

Least **********: *****, *********, ******

** *** ******* **** has ******, *****, *********, and ****** **** *** least ********** **** ********* elevated ************ ** ~***°* or ******, ******* ************ by ~*-*°* **** ** thermometers ** **** ***** though ********** ****** ****** temperatures. ******, ***** ****** / ****** **** ** ideal ********** *** ***** worsen **** ******** **** head ************ (**** ****, glasses, ***.).

Most **********: ******, ****

*** **** ********** ******* were ****** *** ****, with ********* ********** *********** measurements ** **** ** ~5°F ***** **** ** thermometers, ** **** ************ attempt ** ********* ************ to "******" ***** ***** (~97-98°F).

Usability ***********

*** ***** *** ********* terminals ******* *** **** usability, ************* * **** variety ** ******* ******* and *********, ***** **** adjustments *** ************* *********** and *********** ******. ***** and *** ****** ***** adjustments *** ******** **** a ****** ****** *********** range.

Weak **** ********* ** *** ******

**** ********* *** ** spoofed ** *** ******* tested. ***** *** *** their ***** *** **** to ***** *** ***** portion ** *** **** and ** ***** * "pass" ** **** ** the ******** *********** ** below ***** *********. ******** objects **** ** ******, coffee **** *** ****** also ***** **** *********.

Potential ******** ***************

******, ***** ** *** tablets (******, ****, *****) are ******* ** ******** Android ******* *.*.*, *********** leading ** ******* ***************. The ******* ******* ** Android *** **.*.* ** the **** ** *******.

************, ******* ** ***** manufacturers ***** ** ** connect *** ****** ** the ******** ** **** could ****** ** ** upgrade *** ******, ******* of ******** ****** ************ or *** ******* (******, Bems, *****, *****).

Best *** ***** *********** ********

**** ***** ****** *********** accuracy ***** ** *** ability ** **** ******** temperatures ***** *** ****** tested ********* ****** ~*.*°* of ******** **** "******" (~97.9-98.8°F) ************.

** *** *******, ** heated ********' ********* ** simulate ***** ************ (******* from ~**-***°*) ***** ** measurement. **** ******** ** unrealistically **** *** ******* to **** ** ** heat *** ****** ******** from ******** ** ********, a **** ****** **** than ******* **** * fever.

*** ***** ***** (**** *** **** ****) ***** *** **** process, **** *** ******* measured ** ***°* (******* temperature) ** * **** thermal ****** *** ***°* on * ********** ** thermometer, *** *** ****** normalizing *** *********** ** only **.*°*.

*** ****** *** **** tablets **** *** ***** accurate ** *** *********** tablets ** ******, **** aggressively *********** *********** ************ to ******* ***** ****** (~97-98°F). **** ** *********, as ****** **** ********* high ************ ***** ** given * **** ** either *****.

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*** *****, *********, *** ZKTeco ****** **** *** least ********** ** *** tablets ******, ********* ~*-*°* lower **** ****** **** temperature (******** ** *-*°* in ******/****) ******** ** IR.

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Accuracy ********

*** ******* ****** *********** tablets ********** ** "*********" temperature ********, ****** *** temperatures (*.*., **°*) *** high ************ (*.*. ***°*) making **** '******' ************ (97-98°F). *********** *** **** aggressive ** ****** *** Bems, ********* *****, ****** also ********* ** *** Alibaba/Sperry ****, ***, *** Injes *********.

***** ******* ******** ***-***** elevated ******** ************ (~***°*) as ~*+ ******* *****, in *** ~**°-**°* *****.

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********* **** ********** *** temperatures *******. *** *******, low ************ ***** ~**°* were "*******" ** * normalized *********** ***** ** ~97-98­°F.

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**** **** ******** ** hats *** ******* ****** little ****** ** ***********, despite ******** *** ******* areas ** *** ****, which ****** ******** ************ significantly.

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Accuracy ********* ***** ***** **** **** ************

****** ******* **** ******* from *** **** ************, we ******* * *********** impact ** ******* ********. For *******, ******* *** Bems ****** ****** *** from ***** ********* "********", the ******** ****** ********* on ***-***** ****** (****** still ******** ~*°* ***** than ** ************), ***** the **** ****** ********** missed.

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** ***** **** ** this ********** ***** ** due ** *********** ** sensors. ******* ***** *** units *****, *********** ** sensors *** ** ****, though **** ***** ** use * ***** **********.

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Key ******* ******* ********

******* **** ** *** Dahua, ********* *** ****** allowed *** ****** ******* which ****** ******** *** missed **** ******** **** temperatures **** ***** **** did *** ***** *** it ** ** ******** or *** **** *** and *****. ******* *** calibrations *** *********, ** low "******" ***** ***** lead ** ******* ***** elevated **** ************.

*****, ******* **** ** Telpo *** *** ******* few ************* *******, *********** allowing * **** **** to *** ** ***** threshold *** *** *********** read.

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* ******'* ******* ** measure ******** ** ********* heights *** ********* ** also ***, ** **** kiosks ***** **** ****** to ** ********** ** temp (******* +- *.*°*), while **** ****** +- ~0.5°F ** ****. *** example, **** ** *** Dahua ****** **** * subject ** ******* *********, with ****** ******** ** reported ***********.

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*******, ******* **** ** the ****** *" & 8" ******** **** ***** swings ** *********** *********** depending ** ****** *** distance. ** **** ****, our ******* ****** * temp **** ** ~*.*°* by ***** "*** *****" for ******** *********** ***********.

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Environmental ******

*********** ** **** *** in ******** *** *** of *** ******* ** have ******, **** *** manufacturers ************ **** ** windows, ********** *********, ** hot ******** ** ******* in *** **** ** the ******.

****** *** *******, ** found *** ******* ***** experienced ****** **** ****** doors ** **** *** surfaces, ******* ** ** inflated *********** ************ ** no *********** ***** ** all.

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Distance ****** ** ************

********* ****** ************* ** their ******* ** ******* subjects ** ******* ******* and ** ********* *********, impacting ********, *** **** usability, ** ***** *** feel ************* ******** **** close ** *** ****** or ****** ** ***** for ***********.

**** ********* ******** ******** as *** **** *********** regardless ** ********, ******* indication ** ****** ************, shown *****:

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****** *** ****** *** a ******** **** *** in ******* ******** *** further * ******* ***** away **** ***** *********** distances. ********* ** ************ from ~*-*°* ***** ** seen **** *********** ** maximum ********.

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Distance **********

*** ***** ***** ******** manufacturer ************* *** ******** to ****** *** ********* a *******:

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*** ******* ****** *** some **** ** ************ to *** ******** **** if **** **** *** far ** *** ***** to *** ****** *** measurement, ****** ** **** or ***** ** ****. Below ** *** ************ from *****, ****** *** subject ** **** ******* or **** ********* ** the ******** ** *** reader.

Subject ****** ******

***** *** ********* ************ the ****** ***** ** subject ******* ******* *** use ** * ****-** for ******* ******** ** needing ****** ***** ** bend **** ** *** scanned, **** ******.

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***** ** *** **** unit ****** **** *** that ****** *** **** to ** ******* ** or **** ** **** heights **** ************* (****** this ******** ******** *** unit, ** ***** **** attempting ** **** ******* disinfected).

*** **** ******** ********* on ********* *** ******* positioning *** ****** *** aligning ******** *** ****** measurement, *** ****** *******, we ***** **** *** tablets ***** ***** ******* temperature ************ **********.

*******, **** *** *** Injes *** ***** ******** drops ** *** **** was *** ******** *******, which **** **** **** less ************* *** *******'* of ******* *******, *** more ***** ** **** an ******** ***********.

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Mask ********* ***********

*** ******* ****** ***** be ******* ****** ***** hands, ****, *** ***** everyday *******. **** ** an ***** ** **** areas ***** ** ******* controlled ***** ******* * mask ** **** ***** (along **** * "******" temp), *** ******** * mask ****** **** * hand ** ********** **** mask ****** ******* *** purpose.

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************, **** ******* (*** and ******) ****** ** recognize * ********** ****'* face **** * **** on, ********* ****** * second ***** ** ****, or **** ** ******** entry ******* **** *** user ******* * ****.

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Software ************

******* **** *****, *********, and *******/****** **** ******* users ** ****** *** change ************* *** * web ***. ****** ****** configuration ***** ***** ************* application, ***** **** ****** facial *******, ****, *** AC *****, *** ******** other ***** *** **************.

******* **** ** *****, TVT, *** ***** *** more ******* ** ***** software, **** ******* ************* options ********* **** *** the ******'* ***** **.

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Potential ** *** ************* ***************

*******, ******* *** *** of ****, *** ******* are ******* ****-********* *** not ****** *********. ************, with ***** ******* ***** Android, *** *******-***** ******* were ******* ** ******** firmware ********, ******* ** big ************* ****.

*** ********* ******* ** firmware ******** **** **** for **** ******:

  • ******: ******* ******* **** was *.*.*.
  • ****: ******* ******* *.*.*.
  • *****: ******** ******* *.***.*******.*.*
  • *********: ******** ******* *.*.*.
  • *****: ******** ******* ************* V1.850.
  • ****** ****/*******: ******** ******* 17.17.17.12.
  • *****: ******* ******* *.*.*.
  • ***: ******** ******* *.*.*.* (9184), ****** ******* ********.
  • ******: ******** ******* ******-**-****.*.**.

Comments (4)

***** ******* *****. * was ******** ** ******* today *** **** ** heard * *********** ****** was ***** **** ** his ***** ******. *** I ** **** ** is **** *** *********** of ********* ****** ************ for ********* ********.

***** ****** ****** ******* a ***** ** *********** tablet...

***** *** ******** ** clever ** ******** * false ***** ** ********.

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**** ******** ** ******** calls ** "******* *******". Is ***** **** *** I *** *** * front **** ******* ** the ******** ** *** of *** ***** ** far ** *** ****** thermopile? *** ****, ** you **** ** ****** side, ** ******* *********.

*** ********* *** **** of *** "*****" ******* tablets **** ****** *********** use ***** ********** *** have **** ***** ** curl ***** *******. **** would ** ***** *********.

* ** ****** ** these *** ** ********* as ****.

****** *** *** ****!

********** **** **** ** only ****-*******, *** ** shows *** ***** **** of ************* ******* ** the '********' *********: ** family *** * ******** went ** * ***** restaurant *** *** ** fill *** * **** and **** *** ************ scanned ***** ** ***** allowed ******. *** * of ** **** ****** "Healthy" *** ******* ******, even ****** *** * of ** *** * temperature ******* **** *** logged ** ** **.* - **.* *******.

***** **** ***** **** to ***** *** *** that **** "*** *** take *** ***********?" ***** is ********** **** ******* to *** **********, ** family ** *** ****** at ***** *** ****** to ** ******* **** process. *** ** ***** the ********** *** *** they *** '**********' ** place ** **** ** all.

** ***** ***: "******* in *** ***** ** more ********* **** ******* ignorance *** ************* *********"

*** ******** **** *** going ** **** *** of **** **** *** road *** ***** ** be ****. ** **** day * ****** ** sell ******** ******* ** fever ** *********** **********, the ******** ***** ** very ********* *** **** buyers ***'* **** *** kind ** ***** ******** to *** ****.

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