Remembering large numbers of passwords is a nightmare in today’s high-tech world. Keeping computer login details private and memorable is a huge challenge, with many people opting for simple words and reusing passwords across multiple systems. In addition, with the widespread use of personal identification numbers (PINs) as part of financial transactions, it is becoming increasingly difficult to keep their entries hidden.

Kuber and Yu present the results of their research in using the touch sensitivity of fingertips to learn a high-security password provided by a computer system, and then to subsequently reuse it up to one month later.

Their research is very positive: these tactile passwords can be learned by individuals and then reused when needed. There are some challenges to overcome with respect to scaling this solution--specifically, the speed of introducing this alternative process and the physical technology that it requires. Furthermore, before it can be introduced to the public, the research community needs to see studies based on range of fingertip types and cultures, along with a consideration of how to deal with damaged or missing fingers.

The direction is positive, and we should look forward to the authors’ next report.