John CallahaninThoughtful BiometricsBeing Thoughtful about BiometricsAs biometric technologies become increasingly important for access to digital services over the next decade, we must put the control of…4 min read·Feb 22, 2021----
John CallahaninThoughtful BiometricsA gentle introduction to Thoughtful Biometrics — Part 1This article is first in an introductory series leading up to the Thoughtful Biometrics Workshop 8,10,12 March 2021.3 min read·Jan 13, 2021----
John CallahanLinked Data Signatures with RubyI just released the ruby-jsonld-signatures gem: an implementation of the JSON-LD Signatures specification in Ruby that supports the…3 min read·Sep 28, 2018----
John Callahanquiznoob — creating quiz contentIn part 1, you uploaded 1 quiz included in the github distribution (data/qn_mathematics_9x.xlsx). Let’s examine that spreadsheet:2 min read·Feb 5, 2018----
John Callahanquiznoob — connect to Circle via IFTTTNow that you have the quiznoob server up and running (see Part 1), you’ll need to connect it to Circle via IFTTT (if THIS then THAT)…5 min read·Feb 5, 2018----
John Callahanquiznoob — earn while you learnTL;DR — a quiz app for Android and iOS that allows kids to earn internet time on Circle via an IFTTT webhook. The app and server code are…6 min read·Feb 4, 2018----
John CallahanIIW via the Stevens Creek TrailWhile planning to attend the Internet Identity Workshop (IIW 25) 17–19 October 2017, I got a package deal via Upside with Virgin America…4 min read·Oct 23, 2017----
John CallahanShibboleth for Beginners — Part 2Installing and configuring a Shibboleth IdP on Ubuntu 16.045 min read·Aug 3, 2017--3--3
John CallahanShibboleth for Beginners — Part 1Building a test service provider (SP)6 min read·Jul 26, 2017----