article_snippet: A Cambridge computer science experts believes the small microchips' days are numbered and A Cambridge computer science experts should be signing into A Cambridge computer science experts phones in the same way A Cambridge computer science experts log into online accounts.
article_snippet: The University of Cambridge lecturer also believes the time is right to switch from SIM cards because modern cryptographic techniques mean passwords no longer have to be very long.
article_snippet: But as phones have become more mobile, Dr Kuhn believes the technology is outdated and should be replaced with a modern alternative .
highlights_snippet: The University of Cambridge lecturer also believes the time is right to switch because of recent advances in cryptographic techniques .