Kids will also have fun

with RFIDs, especially as they increasingly appear in toys; google "rfid toys" to see examples / discussion of such products.
Forget that nasdaq stock - buy some RFID domains instead
RFIDToys.com, which I own

, along with its singular version, undeveloped already gets around 60 visitors per month, and that's steadily increasing over time.
Kids today have grown up in a world of ever-present surveillance; comforted by someone else knowing where they are at all times - even many rebellous teens will keep in close contact with their parents / relatives throughout the day via cellphone / texting ... RFID simply makes doing that easier / more automated.
Another decade or so, once RFIDs are made much smaller to the size of say a grain of sand that can be placed under the skin using a tool similar to that of a tattoo gun, it's likely RFID implants will become commonplace.
Ron