Author: Tanner

Over the past few months our team at Clemson worked with TigerOne, our card services department, and Apple to successfully bring mobile ID provisioning to campus. We were the first school to integrate this functionality into our own app, my.Clemson, and that integration correlated with the success we saw on launch day – around 4500 students, faculty, and staff were able to add their TigerOne Mobile ID to their phone and Watch. These are record numbers to date. 🎉

The provisioning view in my.Clemson — Splash Screen

There were a lot of unknowns when we started the project, one being that we’d never integrated Duo (the University’s two factor system) with a native client. It made sense to reuse the embedded web version so we didn’t have to reinvent the wheel, but we weren’t sure of how to combine this with our current method of authentication via SwiftECP, whose goal is to avoid the browser!

We ended up with a pretty slick solution. After configuring the IdP to allow a Duo flow from a client that authenticated ECP, it worked like this:

Authenticate via ECP
Try to load the resource that’s protected by Shibboleth + MFA
If the resource needs MFA authentication, show it in a WKWebView and use the navigationDelegate methods to determine when the user has responded
Finally, inject the cookies provided by the Duo flow back into the native client so that it could be used for subsequent requests with a URLSession

Duo flow in action. Please ignore my super old ID picture.

Raspberry Pi

A good Raspberry Pi 4 case

Post author By Tanner
Post date September 1, 2019

My excitement for the new Raspberry Pi 4 turned into disappointment upon learning it couldn’t handle sustained loads without some sort of extra cooling solution. After installing it in this case, I’m happy to say things are looking stable.

The case comes with a fan and three heat sinks

Projects Raspberry Pi

The Rover has dual steering!

Post author By Tanner
Post date July 19, 2019

Dual steering is now just a tap away. pic.twitter.com/4EPnVtqugD
— Tanner Stokes (@TannerStokes) July 16, 2019

Arduino Projects Raspberry Pi Swift

Controlling the Rover’s camera with an iPad gyroscope

Post author By Tanner
Post date July 19, 2019

The Rover got its own iOS app and I implemented a neat way to control the camera servos.

Weekend R&D. pic.twitter.com/oKk5W60Dir
— Tanner Stokes (@TannerStokes) May 20, 2019

Processing Projects

Simple tree generation

Post author By Tanner
Post date February 11, 2019

A slightly tweaked version on a 3D canvas and rotating on the Y axis. Some random() calls are involved.

Adding in some opacity for a simulated depth.

Processing

Lissajous curves

Post author By Tanner
Post date February 7, 2019

I learned about Lissajous curves from a reddit post a couple days ago and decided to replicate it in p5.js. I then had fun with these mesmerizing tweaks… pic.twitter.com/R7OuUkH2gj
— Tanner Stokes (@TannerStokes) February 7, 2019

Source https://github.com/twstokes/labs/tree/master/viz/lissajous

Processing Swift