A Study on Transferability of Microflora through Biometric Devices

Navneet Sharma1Surabhi Singhal1Manjul Mungali1Alok Tripathi1

1. School of Life Science & Technology, IIMT University, Meerut.


Biometric finger printing devices are more commonly used in both the public and private sectors to record attendance. This system involves the physical contact between the skin and the surface of the device. When successive persons align their fingers on the device there's the prospect of the transmission mechanism of the microorganisms from one person to a different. Keeping in view, this study was carried out to assess hand hygiene practices in the context of our university (IIMTU) that uses biometric machines to monitor employee attendance. The study involved a total of 20 employees falling in the age group of 25-69 yrs. Employees participated in presented study were using public/self-mode of transport. Samples were collected from the surface of individual’s fingers before and after marking attendance using sterile cotton swab method. As a result, all individuals were found to carry microbial load before using biometric device. However, a significant increase in individual’s microbial load was reported after marking the attendance through biometric. This work clearly revealed that biometric devices significantly contribute towards transmission of microflora. The outcomes of this study indicate that there is an immense need of maintaining hand hygiene practices for individuals using such devices.

Keywords: Biometric, Attendance, Hygiene, Transmission, Microflora


Aquino S, J. E. A. de Lima, et.al.  (Detection of pathogenic bacteria and fungi on biometric surface of Automated Teller Machines located in Brazilian public hospital) Health Department II and Professional Master Program in Environmental Management and Sustainability, Universidad Nove de Julho, Brazil. Received 21 January, 2019; Accepted 6 March, 201

Bhatta. D, R, Hamal. D, Shrestha. R, Subramanian. S.H, et.al. Bacterial contamination of frequently touched objects in a tertiary care hospital of Pokhara, Nepal: how safe are our hands? Bhatta et al. Antimicrobial Resistance and Infection Control (2018) 7:97

Blomeke R.C, Stephen B. J, Thomas E. Walter M. Purdue UniversitY Bacterial Survivability and Transferability on Biometric Devices. Conference Paper · November 2007 DOI: 10.1109/CCST.2007.4373472 · Source: IEEE Xplore

Carter, M.J. 2005. Enterically infecting viruses: pathogenicity, transmission and significance for food and waterborne infection. J. Appl. Microbiol., 98:1354–1380.

Christensen GD, Simpson WA, et al. Adherence of coagulase negative staphylococci to plastic tissue culture plates: a quantitative model to the adherence of staphylococci tomedical devices. J Clin Microbiol. 1985;22:996–1006.

Elliott, S., Massie, M. (2007). Perspective of Biometric Technologies: A Survey. In Proceedings of IEEE Workshop on Automatic Identification Technologies, June 7 – 8 2007, (259-264).

French, G., Rayner, D., et.al.  M. 1998. Contamination of doctors’ and nurses’ pens with nosocomial pathogens. Lancet, 351:

Martin, Zack, “New Application for Biometrics” Health Data Management Magazine, December 1, 2007.

McBride, M., Duncan, W., and Knox J. (1977). The Environment and the Microbial Ecology of Human Skin. Applied and Environmental Microbiology, 33(3), 603-608.

Neely, Maley A.N.,, et.al.  Computer keyboards as reservoirs for Acinetobacter baumannii in a burn hospital. Clin. Infect. Dis., 29: 1358–1360.

 Nirupa.S, Gayathri V and Shanmugam. P    A Study on Bacterial Flora on the Finger printing Surface of the Biometric Devices at a Tertiary Care Hospital, Int.J.Curr. Microbial. App.Sci (2016) 5(9): 441-446   

Pa W. Clinical and Laboratory Standards Institute, Performance standards for antimicrobial susceptibility testing, twenty-second informational supplement, CLSI, Document M100 –S27. USA: CLSI; 2017.

Reynolds, K.A., et.al. Occurrence of bacteria and biochemical markers on public surfaces [Electronic version]. International Journal of Environmental Health Research, 15(3), 225-234. 

Article ID: M0301012     RA
Received: 02/07/2020 
Accepted: 18/07/2020