bravo22

36 ms·

331.
by bravo22 12y ago
You have a segmented e-ink display in there. They have a full pixel display. They are different. E-Ink displays are 1.18mm thick per their spec sheet and you have to add some mechanically stiff backing to that. Looking at a detailed photo [
332.
by bravo22 12y ago
Well in defence of Chip and PIN (and I can't believe I'm saying this), the exploits listed above take advantage of "No Signature" provided. This is where the card just gives the basic CC information -- same as what is on
333.
by bravo22 12y ago
You are correct in that the NFC is just a protocol but for it to be used without a signature you need a secure element. In their "mock-up" they show a smart car interface on the front and in the FAQ they claim EMV. It is very puzz
334.
by bravo22 12y ago
1. With respect to e-ink on a flexible substrate... it was announced but I've never seen it happen. I've dealt with e-ink fairly recently on two projects. They don't have a flexible design to sell you beyond prototype. and fo
335.
by bravo22 12y ago
I'm calling shenanigans after reading their specs. Here are my reasons: NFC + EMV secure elements are issued by banks and can't be reprogrammed. You can't switch between them on the fly. You can only house "multiple&quot
336.
by bravo22 12y ago
Question is what exactly does "participating" means. Banks generally hate anything that takes away their branding. Less sleek of this -- i.e. reprogrammable Visa cards -- have been around for a few years but banks never supported
337.
by bravo22 12y ago
Reprogrammable stripes have been around for a while, and while this is a more attractive implementation the new EMV rollout (accelerated likely by the recent card breaches) will make this impractical. You can't reprogram an EMV.
338.
by bravo22 12y ago
He has a book coming out I think. Publisher's PR likely.
339.
by bravo22 12y ago
Yeah but my experience with Upverter is that it has been lacking in features. I wouldn't trust it to design anything serious. It feels like a web version of Eagle -- which isn't a good thing. I know I'm sounding negative bu
340.
by bravo22 12y ago
The antenna is way too small for 2.4GHz. It makes sense for higher frequency (60GHz or whatever he said in the video). You can power harvest RF waves straight up but what you absorb gives you very little to rebroadcast again. There are othe
341.
by bravo22 12y ago
I agree about scavenging. It is inefficient and doesn't make much sense.. They're likely rebroadcasting but at a much much lower power level so the next hop is much closer than the first.
342.
by bravo22 12y ago
For GSM the baseband code is always closed. It is often loaded into the module. Part of a modular approval for PTCRB (as well as FCC/CE) is that the end user can't change the power and radiation profile of the device. This is one
343.
by bravo22 12y ago
It is a very cool development but I see couple of issues with it: 1 - It works at about 60GHz. You are not getting a lot of distance or even going through a wall at that frequency and (likely) very low power levels 2 - The devices still nee
344.
by bravo22 12y ago
The buses aren't multi-master. They're often USB, or SDIO. They would use the bus to deliver another exploit directly to CPU driver which is often running in supervisor ring, i.e. kernel privilege.
345.
by bravo22 12y ago
Gotcha. Thank you. The stickers sound like a great thing! Basically $10 iBeacons :)
346.
by bravo22 12y ago
Hi Steve, Is there a volume discount, or is it still $10/sticker (which is a pretty good price in itself)
347.
by bravo22 12y ago
Ok, but the sticker will broadcast like an iBeacon correct? While I see the philosophical distinction you are making here I don't see any technical reason why a sticker couldn't be used as a beacon. So I guess my question is, are
348.
by bravo22 12y ago
From what I've read the difference between stickers and beacon is only battery life. Is this correct? Why would one choose beacon over the sticker?
349.
by bravo22 12y ago
Funny enough in most places parking meters are/used to be like that. I think most cities have retrofitted them with live authorization but there was a time you could use expired CC's for free parking to your heart's content.
350.
by bravo22 12y ago
You could, in theory. Most video streams often have an I-frame every few seconds which is perfect for ffwd and rwd.
351.
by bravo22 12y ago
Wow I am old. The entire time I was picturing a VCR.
352.
by bravo22 12y ago
Exactly. You could pull in sometimes 250-500K as a consulting company, specially if you outsource some aspects of projects. S-Corp is ideal for that.
353.
by bravo22 12y ago
Actually as an S-Corp owner all the corporate income is taxed as REGULAR INCOME. It doesn't become a capital gains tax -- which is what I assume you mean by investment income. However the US government wants you to also pay Social Secu
354.
by bravo22 12y ago
Here is one for NFC: http://www.alibaba.com/product-detail/nfc-tags-and-labels_60...
355.
by bravo22 12y ago
Given that at the end of the day even their USB link is basically a unique code that goes to a website -- thus you can change the content whenever you want -- I don't see why this couldn't be done with a $0.05 NFC sticker and a QR
356.
by bravo22 12y ago
The larger antenna would certainly suggest the lower frequency.
357.
by bravo22 12y ago
BLE + WiFi in some nodes; BLE in all the really low power ones that need to give you data -- like motion sensor.
358.
by bravo22 12y ago
Thread would actually be overkill for that application. Too much crap on the stack. Just use BLE for your switch to talk to your bulb. Done. BLE and 802.15.4 have near identical modulation, and BLE has very low overhead compared to Zigbee.
359.
by bravo22 12y ago
99% chance it uses a bunch of LEDs and optical sensors to measure things like refractive index and volume, couple that with a built in scale (likely a small load cell) and you can classify the drink. Note how they never say it "measure
360.
by bravo22 12y ago
Lora is like 10 bits per second... really slow.

More ›