Alabama State University has installed scanning machines to detect Covid-19 symptoms

Screening stations made by Draganfly show a live video feed of people walking nearby and indicate whether they are social distancing. Red circles mark those who are less than 6 feet from another person.

(CNN)There's a new test for students at Alabama State University -- but this one happens before they even walk into a classroom. Covid-19 screening stations are being set up to scan their vital signs and warn them when they're not social distancing.

Several high-tech screening stations being installed Tuesday in high-traffic areas, such as the campus food court, are designed to read a person's temperature, heart rate and respiratory rate from 3 to 4 feet away. Another set of machines at the university can show a live video feed of people walking or standing nearby and mark a red circle on those who aren't staying 6 feet apart.
But these devices won't catch anyone who's spreading the virus without symptoms. According to a July 10 report from the Centers for Disease Control and Prevention, an estimated 40% of Covid-19 patients do not show symptoms.
Still, during a week when Alabama is seeing an upswing in the seven-day average of new Covid-19 cases, and the University of Alabama reported 1,200 positive cases on its campus, Alabama State University is hoping this is one more tool to help it avoid becoming the next hot spot.
    Draganfly CEO Cameron Chell
    So far, Quinton Ross Jr., president of Alabama State University, told CNN there are no known cases of Covid-19 on his campus. With 4,000 students and 900 faculty and staff members, the university in Montgomery is much smaller than the University of Alabama in Tuscaloosa, where the rising cases of Covid-19 among nearly 10 times the population had prompted the mayor of Tuscaloosa to temporarily shut down all bars.
    "Here at Alabama State University it's really embracing a culture shift," Ross said, regarding the mandatory mask mandate, and testing of all students, faculty and staff before they returned to campus.
    Universities across the country are attempting a combination of mask mandates and other rules to curb the spread of the virus, even in some cases testing wastewater to detect Covid-19 in the sewage coming from particular buildings.
    Ross said the installation of five thermal scanners and five social distancing rigs adds one more layer of protection to an already stringent set of campus rules and reduced capacity in any face-to-face classroom instruction.
    High-tech screening stations placed in high-traffic areas are designed to read a person's temperature, heart rate and respiratory rate from 3 to 4 feet away.
    Each thermal scanner costs about $20,000, and each social distancing rig costs about $10,000, according to a representative for Draganfly, the company that makes these stations. The stations at ASU are paid for through money received from the CARES Act.
    While many devices can offer temperature readings, Draganfly said its screening technology allows the reading of one's heart rate and respiratory rate, among other vital signs, from a distance of 3 to 4 feet. The technology measures blood volume changes, like when a person blushes. The change in certain colors can be used to time one's heartbeat. The technology also measures shoulder motion to see when someone inhales or exhales to detect respiratory rates.
    If someone exhibits symptoms similar to those of Covid-19, the person is then taken aside for further evaluation to see if he or she need to be re-tested for coronavirus.
    Dr. Amesh Adalja, senior scholar at Johns Hopkins Center for Health Security, told CNN the presence of high-tech screening stations is more a show of force than something that can single-handedly make a significant difference in detecting Covid-19.