Biometric screening systems are now in place in countries including Brazil, Australia and New Zealand.
However, some experts have warned that they can cause problems.
The technology is being used to check people for diseases like Ebola, which is transmitted by bodily fluids and has killed more than 8,000 people in West Africa.
Here’s what you need to know about biometric systems.
The first biometric devices were used to test people for polio and the polio vaccine.
But they have since been used to help detect and screen for various other diseases.
Biometric systems can now be used to screen people for Ebola virus.
According to researchers at the University of Oxford, the device has been successfully used to detect Ebola virus in the blood of people with Ebola.
The Oxford team tested the device on people who had been tested for Ebola and in the saliva of people who were not tested.
In the test, the test showed a very high sensitivity for Ebola.
Researchers at the university are now looking into whether biometric testing can be used in a broader setting, such as in a health clinic.
In this case, they have used it to check for blood and saliva samples.
The researchers say that the device was able to detect a small number of Ebola cases in the sample.
Some countries are also using biometric scanners to screen for Ebola patients.
In Nigeria, a pilot project in the capital, Abuja, was announced earlier this month.
the project aims to scan about 100,000 patients at a hospital in the country, which currently has about 5,000.
The pilot project is part of Nigeria’s national response plan to contain the Ebola outbreak in the northeastern city.
The project will also test the device to determine whether it can detect Ebola in saliva.
According the project, the saliva test is not very sensitive.
The test is being tested on around 10,000 samples of saliva collected by a pilot in Abuja.
In addition to testing for Ebola, the new device also has other uses, such a biometric identification card.
According a news report from the World Health Organization, the card can be read by anyone who has received a health care service in Nigeria.
According, the system can be attached to any mobile phone and can be activated remotely.
The card can also be used by health care workers and others with an Ebola diagnosis.
This is important because the virus can spread rapidly among health care professionals.
Researchers are currently testing the device in hospitals, schools and schools in Nigeria and are planning to use it to test for Ebola among more than 10,00 people in a trial next year.
The device can also help people who are too sick to travel to the West African countries to avoid the virus.
In a test on a group of people, the devices were able to identify people with the disease who had travelled to Nigeria or the Republic of the Congo.
Researchers say they have been able to trace contacts to their hometowns.
The devices have also been used in Nigeria to screen potential Ebola patients for other diseases such as malaria, malaria-related complications, tuberculosis and HIV.
The World Health Organisation has already issued a travel alert for Nigeria, which includes the use of biometric tests.