Just this morning I was selling tickets to an Interpol concert in Seattle and realized people on Craigslist were posting pictures of their tickets with the barcodes visible.

I'm sure it's happened before.

So you could easily scan it, go in early, get free access to the ticket, and the purchaser is going to blame the guy he bought it off, not you.

Shut up and take my money.

I took a class on this topic last summer. It was hard, but extremely rewarding in the end.

Awesome, thanks for the feedback. I'm looking forward to the rewarding part :)

This is awesome. Are there any projects like this written in Ruby that I can easily integrate into a Rails app?

You may want to look at houston [0] and/or helios [1].

[0] https://github.com/nomad/houston

[1] http://helios.io/

For Ruby I definitely recommend RPush: https://github.com/rpush/rpush. Helios hasn't been updated in a very long time and has a massive list of unresolved issues.

Thanks. I hadn't seen rpush and it looks great.

If you're interested in push notifications based on analytics data, check out Pushpop [1] (doesn't explicitly support iOS yet)

https://github.com/keenlabs/pushpop

Grocer is the most stable APNS gem I've used https://github.com/grocer/grocer

Awesome! I've been waiting for them to put this up.

Yes! Reading that part put a smile on my face.

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Oh, it's not open source. I'm disappointed.

I think they're just using Crowd Supply as a way to set up a simple pre-order system.

I've seen several preorder strategies in the recent electronics kit field.

The P112 project did a kickstarter. Mines sitting on the bench, too many other things to work on. A very simple kit given what it does. I'm sad I had to wait like 4 months for someone else to put the SMD components on, I could have done that myself in less than an hour.

The N8VEM people sit on preorders until they get 20 at a time. Sometimes thats a very short amount of time indeed like days, sometimes its a bit longer like years between orders of certain obscure PCBs!

The SpareTimeGizmo people have done some ship off the shelf and some preorder, I think? I was fast on the draw and got one of the last 6120 PDP-8 full kits ever made some time in the 00s.

The KB9YIG SDR people were supply line limited at a very low price, so as they put together sets of bargain price kits they put them up for sale and usually sold out in an hour or at most a couple hours. To say this aggravated people who missed the 45 minute sale window, every time, would be a profound understatement. They switched to a much higher price and off the shelf shipping a couple years ago. I miss paying $11 for a single band fixed freq SDR although its annoying to pay $21 today for the same thing, its nice that its always in stock rather than being something like a lotto.

I purchased Mining the Social Web, 2nd Edition (O'Reilly, 2013) a few weeks ago and have been loving the IPython Notebook setup they're using to distribute the code examples. Anyone can clone the following git repo and play around with the code:

https://github.com/ptwobrussell/Mining-the-Social-Web-2nd-Ed...