So why has LEDCom not conquered the world? On 21 September 2016 at 01:23, IVP wrote: > > First the seminal paper on th subject by Dietz et. al.: > > > > http://math.hws.edu/vaughn/cpsc/336/docs/led-sensor.pdf > > Thanks for that BAJ. I passed it on to some students who are already > plotting about secret data ports and keys on their devices !! > > Joe > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2016.0.7797 / Virus Database: 4656/13054 - Release Date: 09/20/1= 6 > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 __________________________________________ David C Brown 43 Bings Road Whaley Bridge High Peak Phone: 01663 733236 Derbyshire eMail: dcb.home@gmail.com SK23 7ND web: www.bings-knowle.co.uk/dcb *Sent from my etch-a-sketch* --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .