Seen this thing working pretty nicely in Finland in some occasions. Staff at doors read barcodes from mobile phones with handheld scanners. Works nicely and swiftly, no need to run to ticket office to get your paper ticket -- unless you really want to have a paper copy.
Barcode is always related to the phone number, so one can receive a new copy of ticket right away (in case of accidental delete). One barcode can hold anything from single to multiple seats - it's just matter of database design.
And for those thinking of faking the barcode: can't fake it because of the database connection. Or of course one CAN make a fake barcode easily, but you'll be caught right away when trying to use it.
BTW: It's just amazing how often companies try to sell old stuff as "new innovations":-/
The pellets exceed all criteria set by the US Department of Energy for 2015, enabling a car to drive more than 500 km on a 50 L tank (13 MJ/l)
Call me stupid, but I don't get this. Why does the US Department of Energy want to increase energy consumption by 2015?
Because, that's what it is (if I read this correctly): consuming maximum of 50 l of fuel to get as far as minimum of 500 km. Ok, of course I understand they really don't mean to increase consumption. But I don't understand their criteria.
My old'n'trusty Renault 19 goes circa 650 km with full tank (mixed drive) and even further on highway. Compared to this 50 l task my car should go circa 710 km. Heck, the car is 15 years old!
So given this, I think more realistic value should be like going 3000 km on 50 l (for another comparison: some regular HDi cars of today can make more than 1250 km on 50 l tank)
Please explain me what did I understand wrong here? Or is it the US Department of Energy to be laughed at? Or is it something else I missed completely?
And yes, this is a bit of troll, because if I understood the issue correctly, there sure is something wrong in the department mentioned before...;-)
Using hash functions in biometric identification has been already around for awhile. Working everyday examples can be found for example from http://www.deltabit.fi/. They're used in hospitals, homes, even fitness centers.
In their appliance no fingerprints are saved to anywhere (!), only the numerical value, which is product of one-way-only hash function. I repeat, no image of one's finger print is stored anywhere, it's not even possible with the equipment used. You simply can not reverse the numerical value back to fingerprint - not even if you knew all the mathematichal functions used.
Additional note: their appliance detects also dead fingers (prevents cutting of fingers) and use of fake fingerprint layers on top of fingers (like that gelatine stuff used by old'n'famous 007). Works also in freezing temperatures (normal here in Finland, at least in winter times;-)
I personally am very skeptical about everything that can be used in Big Brother way, but I find this device something genious. Just keeps me wondering why they didn't implement anything like this to passports (instead of that unreliable facial recognition).
/kuma
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Seen this thing working pretty nicely in Finland in some occasions. Staff at doors read barcodes from mobile phones with handheld scanners. Works nicely and swiftly, no need to run to ticket office to get your paper ticket -- unless you really want to have a paper copy. Barcode is always related to the phone number, so one can receive a new copy of ticket right away (in case of accidental delete). One barcode can hold anything from single to multiple seats - it's just matter of database design. And for those thinking of faking the barcode: can't fake it because of the database connection. Or of course one CAN make a fake barcode easily, but you'll be caught right away when trying to use it. BTW: It's just amazing how often companies try to sell old stuff as "new innovations" :-/
The pellets exceed all criteria set by the US Department of Energy for 2015, enabling a car to drive more than 500 km on a 50 L tank (13 MJ/l)
Call me stupid, but I don't get this. Why does the US Department of Energy want to increase energy consumption by 2015?
Because, that's what it is (if I read this correctly): consuming maximum of 50 l of fuel to get as far as minimum of 500 km. Ok, of course I understand they really don't mean to increase consumption. But I don't understand their criteria.
My old'n'trusty Renault 19 goes circa 650 km with full tank (mixed drive) and even further on highway. Compared to this 50 l task my car should go circa 710 km. Heck, the car is 15 years old!
So given this, I think more realistic value should be like going 3000 km on 50 l (for another comparison: some regular HDi cars of today can make more than 1250 km on 50 l tank)
Please explain me what did I understand wrong here? Or is it the US Department of Energy to be laughed at? Or is it something else I missed completely?
And yes, this is a bit of troll, because if I understood the issue correctly, there sure is something wrong in the department mentioned before... ;-)
kuma
Using hash functions in biometric identification has been already around for awhile. Working everyday examples can be found for example from http://www.deltabit.fi/. They're used in hospitals, homes, even fitness centers.
In their appliance no fingerprints are saved to anywhere (!), only the numerical value, which is product of one-way-only hash function. I repeat, no image of one's finger print is stored anywhere, it's not even possible with the equipment used. You simply can not reverse the numerical value back to fingerprint - not even if you knew all the mathematichal functions used.
Additional note: their appliance detects also dead fingers (prevents cutting of fingers) and use of fake fingerprint layers on top of fingers (like that gelatine stuff used by old'n'famous 007). Works also in freezing temperatures (normal here in Finland, at least in winter times ;-)
I personally am very skeptical about everything that can be used in Big Brother way, but I find this device something genious. Just keeps me wondering why they didn't implement anything like this to passports (instead of that unreliable facial recognition).