MiFi Mobile Hotspot Technology Has Arrived!What's MiFi?! It sounds like WiFi, and although it's related, it isn't the same thing. Mi-Fi is an amazing innovation that is often referred to as a mobile hotspot, and hopefully the discussion below will answer all of your questions! I think Mi-Fi technology is a great idea, and although prepaid plans aren't currently available, I expect that it's only a matter of time before prepaid MiFi plans will be offered. In the meantime, I wanted to build a good resource to help people learn about this exciting technology. Signing up for my free Prepaid Wireless Tracker ezine is probably the easiest way to make sure that you hear when prepaid Mi-Fi plans become available. What's MiFi? MiFi is a mobile hotspot. The next logical question is: "What's a mobile hotspot?" Hotspots are often referred to as Wi-Fi hotspots. Follow the link to Wi-Fi to learn more about this technology, including prepaid Wi-Fi. Once you understand Wi-Fi technology, whether a hotspot at a local coffee shop, or using your wireless router at home, add to that mobile broadband technology. In other words, combine Wi-Fi with cellular technology, and you've got yourself a mobile hotspot! How does a mobile hotspot work? Essentially take a cellular mobile broadband modem that you would normally plug into your computer (using a PC Card or USB modem), unplug it, and put a battery inside so that you don't have to get power from your computer. Now take that standalone device and add Wi-Fi technology to it. Now you can connect your computer to the mobile Mi-Fi hotspot using your computer's Wi-Fi technology! How many computers can connect to a MiFi mobile broadband device? Typically five computers can connect to a Mi-Fi device at the same time. 
In
fact, it doesn't have to be a computer/laptop. It can be any
Wi-Fi enabled device such as a cell phone, Apple iTouch, etc.
Why five devices? Well, it's most likely to do with
capacity.
By
capacity I mean that the more devices you have connecting
to the same
Internet connection (in this case a MiFi device), the slower the
connection will become. For most people just surfing the Web
and
checking email, you won't likely notice any affect on speed when
five devices are connected. Could you connect to
more?
Probably! Would
you notice a difference in speed with 10 devices? Maybe,
maybe not,
but
five is the current standard. I expect that at some point
there
may be ways to increase that number.Also, keep in mind that wireless carriers also have to consider the cost impact. In theory, you could have five people in a small office sharing the device for Internet access. Before MiFi, they would have to buy five modems and five plans, whereas now they only have to buy one device and one plan! So if wireless carriers allowed 10 or 20 people to connect at the same time, not only would the user experience start to deteriorate (i.e. slow connection speed), but they would lose a lot of money! Can I keep it in my bag? Yes! A Mi-Fi device is just like a Wi-Fi router, and can be accessed from ~32m (or 120ft) away. And because it has its own power source (i.e. battery) you can leave it in your pocket or bag, or in the corner of your office and still access it! If you're on the go, you'll probably find that you use the battery feature a lot. If you're using it all day though (ex. in a remote office or spending all day in a bookstore), you'll want to plug it in. You can either plug it directly into the outlet in the wall, or you can plug it into a powered USB port on your computer. Note, however, that most computers don't provide power to devices plugged into USB unless the computer itself is plugged in. But bottom line is that you have options! Plug it into your computer, keep in in your pocket or bag running on the battery, or plug it into the wall. There's also usually a sleep feature when it's in battery mode. What this means is that when you're not accessing the Internet for a period of time, the device will enter a sleep mode to conserve battery power. In the MiFi devices I've seen, you have to push the button on the mobile hotspot to wake it up. You can usually disable this feature, which can be inconvenient if the device is not within arm's reach, but will mean that your battery will die faster. They're said to last 4 hours with continuous use, or 40 hours on standby. What about security? You might be asking yourself whether or not your neighbors, or the guy next to you in the bookstore can "steal" your connection. The answer is no! You have access to administration rights to the device that allow you to specifically give permission to the five devices that are allowed to access your mobile hotspot.
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