Comments on: Not just contactless, but M&S contactless http://tomorrowstransactions.com/2013/05/not-just-contactless-but-ms-contactless/ Thought leadership from Consult Hyperion Tue, 09 Sep 2014 00:19:19 +0000 hourly 1 http://wordpress.org/?v=4.0 By: JohnLangman http://tomorrowstransactions.com/2013/05/not-just-contactless-but-ms-contactless/#comment-125 Tue, 28 May 2013 08:53:01 +0000 http://ec2-54-201-142-57.us-west-2.compute.amazonaws.com/2013/05/not-just-contactless-but-ms-contactless/#comment-125 I have to take issue with your ‘nigh on impossible’ remark and your test method. Firstly have you plotted the RF/Magnetic field strength, if you do not have a full reading of the aerials lobes then there is an issue, a smith chart would plot this out and can be done in 3 dimensions. This is would show the radiation pattern field strength and any side lobes, then you state definitively that it is theoretically impossible for a card to be remotely re-written, provided the caveats are met. Your test kit could easily miss a side lobe radiating at some strange angle and it should be remembered that sub wavelength products produce odd radiation patterns and that anomalies are easily produced by the surroundings.

]]>