Non-contact fever screening


Harlequin uses infrared (IR) camera based thermography to precisely correlate core body temperature, providing a fast, non-invasive, and non-contact method of screening individuals at risk of infection.

A fever is the body's natural response to fighting infections such as Covid-19, and in-depth research has shown that infrared (IR) camera based thermography can effectively be used to detect elevated body temperatures.

Since the Covid-19 outbreak, significant time and resources have been invested in the development of screening technology to provide an additional safety measure to help keep the general public safe, and contain the spread of the virus.

Harlequin precisely measures the temperature at the corner of the eyes, as this yields the closest correlation to core body temperature. Other methods of mass fever screening such as infrared (IR) temperature guns, contact thermometry and self-reporting health declarations are questionable in terms of effectiveness. 

The technology can be deployed in most locations but primarily expected to be used in factories, offices, airports, seaports, universities and sports venues.  

Harlequin Software

Spookfish has invested significant resource and time to leverage its core expertise in thermal imaging and automation to provide a solution adhering to key principles of both British (BS EN IEC 80601-2-59:2019) and International (ISO/TR 13154:2017) standards on fever screening.

This work is on-going and has been hugely bolstered by the recent award by Innovate UK to help innovative businesses fast track development due to Covid-19.

Before investing in Fever Screening technology ensure the following four key criteria are considered:


Some of our recent clients:


Accurate detection and Rejection of the following defects:
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Accurate CLASSIFICATION and SORTING of the following CATEGORiES:
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Non contact, non invasive fever screening

Corner of the eye measurement location

Precise correlation to core body temperature

Mass screening one person at a time

Rolling average measurement

Combination of both thermal and visible imaging

Auto-ambient correction

Critical alarm system (Visual, Audio and E-mail Alert) 

Automated system 

Report generation (Daily and audit trails) 

Intuitive user interface

Technical specs

Throughput: up to 900 people/hour 

Resolution: ~640 x 480 pixels, FOV: 25° x 18.8°, Frequency: 30Hz

Thermal Sensitivity: (WHO approved sensitivity required)

Precision: ±0.25°C 

Absolute Temperature Accuracy: ±2°C or ±2% of reading (WHO approved accuracy required)

Emissivity Correction: 0.01 to 1.0 (Fixed at 0.98)

Working Distance: Max. 2m

Key principles: ISO/TR 13154:2017 and BS EN IEC 80601-2-59 standards

Compliance: 21 CFR Part 11


for further information on the product:
Product Brochure PDF

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