Create a "cheat sheet" like this to let friends access your Wi-Fi easily

When friends come to visit, it’s increasingly handy to let them connect their smartphones and tablets to your Wi-Fi network.  Whether they want to share amusing YouTube clips, download the latest and greatest apps/games you’ve been discussing or just access web and email, Wi-Fi usually makes it quicker than relying on the mobile phone network. There’s another benefit if they’ve got an iPhone/iPad and your house has an Apple TV as part of your audio/video setup. By connecting their Apple gadget to your network, they can beam their choice of music, videos or photos to your TV/hifi wirelessly using AirPlay. It’s really simple and makes media sharing much more immersive than passing someone’s iPhone or iPad around.

But there’s a problem. If you’ve secured your home Wi-Fi network, it’s protected with a strong password that needs to be entered on every device that connects to the network. The longer and more complex the password, the harder it is to type in on an iPhone/iPad. Wouldn’t it be great if there was a way of entering the password without having to type it in?  There is: QR codes. We used them last night when we had friends round for St Patrick’s Day dinner and they made light work of distributing my ridiculously complicated Wi-Fi password.

Just scan the QR code, choose "Copy Password" then paste it into the device's Wi-Fi settings

You’ve probably seen QR codes before.  QR codes are those square barcode things you’ve seen popping up on advertising posters.  They’re normally used to provide an easy way of entering web addresses into smartphones, but they can be used for lots of other types of information – including Wi-Fi network details.  To use them you simply open a QR code reader app, scan the QR code with your camera and then the phone decodes the information.

To help your guests get online, all you need to do is create a QR code that contains your Wi-Fi details, then print out a “cheat sheet” for your guests to use.

You can create your QR code here by choosing “WiFi Network” from the “Select a Code Action” drop-down: http://keremerkan.net/qr-code-and-2d-code-generator/

Once you’ve got your QR code, copy and paste it into your “cheat sheet”. Here’s a template for creating your own cheat sheet.

Does this approach help you? Any other suggestions for making this stuff easier? Please let me know in the comments.

The Evolution of the Web

The false start rule used to be more lenient. Historically, every athlete would receive a warning on their first false start and disqualification on their second. In 2003, the rule changed so that the first false start warning applied to the entire field rather than just the offending athlete. In 2010, warnings were eliminated entirely. Avoiding delay to TV schedules was a key driver for streamlining the rule, but I suspect that broadcasters would rather show “The Lightning” competing than have him disqualified on their account.

So, let’s explore the rule and consider alternatives.

The rule has two main objectives:
1. To prevent athletes who false start from gaining an unfair advantage; and
2. To discourage repeated false starts, since these can disrupt competition schedule.

Objective 1 is currently met by “recalling” and restarting races in which a false start occurs. It could also be met by applying a penalty to offending athletes – similar to the drive-through penalty that errant Formula 1 drivers may experience, or the penalty that show jumpers receive when they knock down jumps. Perhaps add a 0.5 second penalty for every 100m of race distance for athletes who false start. A more radical alternative would be to measure each athlete’s race time from when they start running rather than when the gun fires. This approach could remove the need to recall races in which a false start occurs. Any false starter would receive no advantage; probably the opposite because they would act as a pacemaker for others to chase down. Both alternatives would have the disadvantage that first-to-cross-the-line would no longer necessarily be the winner – spectators could be confused in false start scenarios. Also, both alternatives would require changes to the timekeeping approach and supporting equipment.

Objective 2 is currently met by penalising every false start with disqualification from that race (then restarting the race without the offending athlete). Another approach would be to “warn” athletes and disqualify them after repeated false starts – either within the same race or cumulatively across several races. For example, athletes could receive “points on their licence” for every false start and be disqualified when they hit a threshold level of unexpired points. Another alternative approach would be to allow races to continue races regardless of false starts and disqualify the offending athlete(s) after the race. Both alternatives have drawbacks. Administering “false start points” across races would be a new process which could be complex to establish and operate in practice. Also, continuing rather than recalling races may be unfeasible or unfair in cases where one athlete’s premature movement triggers others to move before the gun.

Are any of these more radical alternatives better than the current approach? In practice I suspect not.

The IAAF should ask the athletes what they think. For simplicity, I suggest the best option would be to reinstate the IAAF rules from 2003: warn the entire field on the first false start and subsequently disqualify any any athlete who false starts. This approach seems to provide a sensible balance between schedule protection and accident tolerance.

The photo was taken in a public area of Luton Airport. As a departing passenger, I was evidently in the wrong place, because the sign required “Passengers Only Beyond This Point” and I was not beyond that point.

What they really meant was “Only Passengers Beyond This Point”. For greater ease and accuracy, they could have simply written two words: “Passengers Only”.

First I saw the Nature Valley advert, proclaiming “We wanted to increase deliciousness by 200%… So we put two bars in each pack”. How embarrassing that they messed up their percentages! It would have been safer to use words like “doubly delicious”, but they threw in a spurious statistic instead. Still, it got them lots of unexpected publicity.

Then I saw a puzzling proposition from Orange: “Free iPhone for just £25 a month”. Has inflation spiralled out of control? £25 a month seems steep for something which was free four words earlier. That can’t be right. Maybe they mean “free” as in freedom, so the handset is not locked to their network and is “jailbroken” so that it is freed from Apple’s functionality shackles? No, and No. And yet freedom seems a reasonable expectation from a company whose parent is called “Everything Everywhere”…