fingerprint scanners are often touted as the future of security and an alternative to the notoriously flawed .
but experts have discovered they may not be as secure as first thought after a number of android devices , including samsung 's galaxy s5 , were said to be potentially ` leaking ' fingerprints .
the pair told thomas fox-brewster from forbes that the flaw lies in older versions of the android operating system , up to and including android 4.4 .