Recon Jet head-up display puts bike data in your vision at Eurobike 2013

I'm looking forward to Google Glass with HUD GPS etc. Is it necessary? Ofc not but 95% of the cycling-related crap we buy isn't necessary. If it enhances your enjoyment and you can afford it then buy it, else don't but don't have sour grapes about those that do. And no it's not a safety issue if you're not a complete muppet.

That is fugly, let Stephen Fry buy one first. Let me know in 5 years.

Might we never see another episode of Chris Froome 'staring at stems'?

not sure I really understand the safety concerns. The information is already available, so most people who want to see it already do - but on a computer mounted to the bars/stem, where they have to move their head down and thus reduce their view of traffic/hazards. This allows looking at the information without blocking your view of the traffic - it's overlaid on your field of vision, but it's still see-through and you can still see what's going on. Surely that is safer, no?

If the issue is concentration being affected by the availability of data, then that's a problem with any type of info you look at while riding, regardless of where you look at it. So we should ban cycle computers, as they're unsafe.

I'm holding out for cybernetic implants.

Is it just me? This looks like it totally blocks out the area of the glasses I look through to see what's behind me. I turn my head to the right, and look through the bottom portion of the lens. That's why I prefer cycling glasses with no frame at the bottom!

Now that all the Telegraph readers have vented, let's think this through:

Heartrate is very useful when going quickly, or even not-that-quickly: maintaning 75-80% of Lactic Threashold can mean the difference between a hard yet enjoyable 7-8hr ride and one that ends in a quivering bonked mess on the side of the road in the middle of nowhere, having pushed 85-90% too early, too often. Not having to look down all the time would be great. And no, I don't want to set an audible alarm.

Distance/altitude/navigation in general: anyone who frequently rides new places knows how much difference a good route and spot-on nav can make to a day out. Missing a turn-off halfway down a 1,000m descent can really ruin your vibe, if it takes you a few km to realise your error, and have to flog back up the hill. Plus just not having to stop every 5 minutes to orient a map (even a moving one).

Photos: I like to take loads of photos. Around 200 on each day in the Alps last week, which meant a few hundred reaches into the top-tube bag for the camera, slowing each time with one hand on the brakes/bars. And there's one photo I know I'll regret not getting for the rest of my life, of my best friend taking the first left-hand hairpin off the Sustenpass, banked hard over with the Stein glacier in the background. I just was not quick enough. But if could have just shouted 'PHOTO' or pressed my temple or wiggled my nose or whatever, that would have been grand.

Personally I can't wait to remove the need to look down / get a phone or camera out. Handsfree, zero-effort data acquisition. I can see this being a real boon. And just like satnav in a car, you don't *have* to look at it. I imagine it could even be turned off completely, and only activated on demand, or on a timed basis, or when a turn was approaching, or a parameter (HR/power/whatever) was exceeded or met.

Its bad enough having to contend with car drivers using sat navs or phones or ipads, or - as I encountered only last week - some jerk in his BMW driving slowly along with a damned kindle because the book he's reading is far far far more important than whats happening the other side of his windscreen - so now I have to put up with those other idiots on bikes.

Hopefully this will be banned - as quickly as possible.

Interesting, but coming after this: http://road.cc/content/news/91759-sat-nav-driver-who-killed-cyclist-spar..., has to be used very carefully.

And for me, a bit pointless. What do you need all that info in real-time for? Information overload. The only useful thing might be heartrate (or power?) but since almost every HR monitor I have ever seen can be made to go "beep" when you go outside your target zone why do I need the number obscuring my vision? I'm not a fighter pilot...

How long before this technology is adapted for time-trialling?

As in having a small camera mounted on the helmet feeding a view of the road ahead into the glasses (or visor perhaps?) allowing the rider to keep their head in a downwards position.

honestly, whatever happened to just going for a ride??

I feel like Glass will be better in a lot of ways, namely running android and being a google product.

The big point for me is the Ant+ compatibility. This is something that as far as i'm aware google aren't offering with it's glass. Whether that's really enough to set it apart will remain to be seen... what with the garmin 510 and 810 series linking to phones already (i think!) i can't see it being too difficult to use a phone as a mid layer between the glasses and the Ant+ devices.