Advantages and disadvantages of digital jewellery?

Java

THE ADVANTAGES ARE

1) IT PROVIDES SECURITY for example Java RING is used to lock or unlock doors or computers...as we use passWords and keys to lock our doors and computers we dont need to remember all those passWords and carry all those keys.SO Java ring is designed to provide security

2)AS COMPUTING DEVICES are embedded it is not neccessary to carry CELLS r COMPUTERS...hence it is easy to carry everywhere