Question: Is it possible to use WiFi anywhere we want just because we have a WiFi card? 

Answer: Well...Yes...Anywhere there is a Wireless Access Point (WAP) available.  And now-a-days, this is pretty much anywhere.\n\nGo to Starbucks, or McDonalds, or Holiday Inn....Or just a crowded neighborhood and you're bound to find one.\n\nOf course, if the WAP is secured, you'll need to know the password to connect.\n\nNow, the alternative is a WWAN card.  This is what Verizon and Sprint are selling now.  It's a card that goes in your laptop that allows you to connect to their wireless broadband anywhere you can get a cell phone signal.  This will provide much greater coverage, but generally slower speeds.
This question from the Yahoo Q&A forum is categorized in the topic: Family & Relationships