Of course, if you do, remember that you are going to have to buy the expansion jacket as well to get the pcmcia or cf slot on the ipaq, which brings the cost of just about any ipaq above the stock zaurus which needs no expansion for the wireless card, and still has a slot left for memory. Did I mention the keyboard? Seems like a no-brainer.
Also; definitely consider the spectrum/symbol cards (same card branded two ways) as it is the most effecient power wise which is extremely important when doing handheld wireless.
It doesn't work like that. Here's a simple summary of why that is. Let's assume light can wiggle back and forth in any number of continuous directions, but we're going to look at the following discrete possibilities: - | / \. (In other words, it wiggles left-to-right, or up-to-down, or lower-left-to-upper-right, etc).
Here's the problem. For someone to intercept and transmit these light signals, they have to know which way the light is wiggling, and as far as modern physics knows (they're pretty sure on this one!) the only way is to actually measurement (the quantum comes in like Schrodinger's cat; he's neither dead nor alive till you look, well, these light particles aren't really in any direction until you look). But as soon as you 'look' (stick up a + filter, or a x filter (in other words, + lets through | and -, and x lets through / and \), you've actually changed the orientation of the particle. This is where observing the stituation actually changes it. In other words, we've found poor shrodinger's cat, dead after all. Or not, but we've actually made it one or the other, while it was somehow both before. The person at the other end of the quantum encryption can take some very simple statistical samplings of his readings and find out that somebody's listening on the line.
Because Eve (spy in the middle; Alice and Bob are the two trying to communicate securely, these are classic crypto imaginary characters) actually changes the particles when she observes them, she doesn't really know the exact superposition they were in before, so she can't transmit them exactly the way she received them.
Hopefully that helps some. It's been a while since I looked at this stuff.
Slashdot Mirror
Of course, if you do, remember that you are going to have to buy the expansion jacket as well to get the pcmcia or cf slot on the ipaq, which brings the cost of just about any ipaq above the stock zaurus which needs no expansion for the wireless card, and still has a slot left for memory. Did I mention the keyboard? Seems like a no-brainer.
Also; definitely consider the spectrum/symbol cards (same card branded two ways) as it is the most effecient power wise which is extremely important when doing handheld wireless.
It doesn't work like that. Here's a simple summary of why that is. Let's assume light can wiggle back and forth in any number of continuous directions, but we're going to look at the following discrete possibilities: - | / \. (In other words, it wiggles left-to-right, or up-to-down, or lower-left-to-upper-right, etc).
Here's the problem. For someone to intercept and transmit these light signals, they have to know which way the light is wiggling, and as far as modern physics knows (they're pretty sure on this one!) the only way is to actually measurement (the quantum comes in like Schrodinger's cat; he's neither dead nor alive till you look, well, these light particles aren't really in any direction until you look). But as soon as you 'look' (stick up a + filter, or a x filter (in other words, + lets through | and -, and x lets through / and \), you've actually changed the orientation of the particle. This is where observing the stituation actually changes it. In other words, we've found poor shrodinger's cat, dead after all. Or not, but we've actually made it one or the other, while it was somehow both before. The person at the other end of the quantum encryption can take some very simple statistical samplings of his readings and find out that somebody's listening on the line.
Because Eve (spy in the middle; Alice and Bob are the two trying to communicate securely, these are classic crypto imaginary characters) actually changes the particles when she observes them, she doesn't really know the exact superposition they were in before, so she can't transmit them exactly the way she received them.
Hopefully that helps some. It's been a while since I looked at this stuff.
-jordan