Section A
Next time you enter a username and password, think about the
rhythm of your typing. Not only can it be used to identify you, it can reveal if
you are in a stressful environment. It has long been known that
the rhythms of a person’s typing style are (47) over time,
leading to suggestions they could be used to (48) identity
or even spot early signs of Alzheimer’s disease. But little was known about the
effect of stress on typing (49) , so psychologist Mike Dowman
and colleagues at the University of Abertay investigated. They
asked 35 people to log into a computer 36 times over three (50)
sessions up to a month apart, using the same username and password.
People were put into (51) and relaxed states
alternately(交替地) by listening to a range of sounds known to
(52) particular emotions. The length of
time each key was held down and the (53) between one being
released and another pressed was recorded to generate a typing
"fingerprint" for each person. The team used the data to develop and test
software that identifies a person from their typing style (54)
. The data also showed that stress can be
(55) in a person’s typing because it changes the pattern of
timings. "There’s no question: people do type (56)
under stress," says Dowman. He suggests that security systems could
be designed to raise the alarm if it seems that a person might be being forced
to log into a system. More research will be needed, however, before a system
could tell if a person is, say, just having a bad day or being held at gunpoint.
A) stressed B) alone
C) provoke D) stable
E) interval F) verify
G) only H) unchangeable
I) differently J) environments K)
detected L) complete
M) normally N) patterns
O) separate