The concept of Radio frequency based identification tags  is becoming the in-thing in all kinds of devices where user and machine interface are required frequently and at a rapid pace. It spares the authorities physically invasive frisking which is widely resented by air passengers. In sectors like air travel, traffic engineering and cargo transport where authorities have to monitor the behaviour of users vis-à-vis their vehicles and their passengers and cargo, Radio Frequency Identification or RFID is becoming a boon.
RFID is cost-effective, non-invasive and allows freedom of movement in large enterprises.
RFID tags are being used in passports issued by many countries. Malaysia was the first country to issue RFID tagged passports in 1998. Now the UK and the US too have incorporated it. It makes them tamper proof as the visual data recorded on the pages is also entered in the RFID tag. Toll gate collections are also being done through RFID-embedded tickets.High-frequency RFID tags are used in library book or bookstore tracking, building access control, airline baggage tracking, and for tracking items of sale in shopping malls. Being inexpensive, they could be attached to items as small as garments, bottles of perfumes, or even hairclips. High-frequency tags are widely used in identification badges, replacing earlier magnetic strip cards. Wider applications are being found for the RFID everyday. During the recent months at least two institutions in and around Bangalore reported incorporating the RFID in key areas. 
The SJC Institute of Technology, Chickballapur, has come up with an RFID device to control overspeeding by vehicles and book the offenders in a novel way. Three girl students of BE final ( Rekha K N, Swapna N, and Veena K), have prepared a prototype of the device. The device envisages embedding the RFID in the licences of drivers. The licences would be read by a card reader installed within the vehicle. Whenever an RFID equipped vehicle exceeds the designated speed limit, the driver will be alarmed by a monitor where red alarm slots would emerge on the screen. The vehicle will cease to operate if the driver violates the speed limit five times.
Once this happens, the driver will have to seek the help of the police to release the block after paying the penalty. According to Prof Thammaiah, head of the Electronics Department of this rural college, the RFID device would also work as an anti-theft device as only those with car compatible licences would be able to operate the car. Prof C S Sridhar, who guided the project, says the system has been named as ‘Universal Vehicle Speed Control and Ticketing System’.  Sridhar says, in times of highway accidents, the system could be helpful in establishing the culpability of the offending driver. For instance, the system could at least identify the vehicle and driver who overshot the speed limit in accidents due to collision. 
However, more futuristic uses envisage laying RFID tags on city roads which could even inform the drivers of varying speed limits in various zones such as hospitals, schools and highways in and out of cities. In another development, the Mahaveer Jain Hospital, Bangalore, along with two more hospitals in the United States (at Carlsbad in New Mexice state and California), began embedding patients’ card with an RFID chip called Clinical Information Processing Platform  (CLIP) last April. The chip enables the hospital authorities to track the patients at various stations within the hospital. It was developed by a US based company, Aventyn Inc, owned by an Indian, Navind Govind. Aventyn is a health solution provider company.
The CLIP embedded Health Card and patient wristbands tagged with RFID provide the capability for hospital staff to reliably identify the right patient with the right health record thereby automating several manual processes with reduced errors. It is equally deployable in hospital asset management with capability to track expensive inventories such as stents, pacemakers and vials of injection. It could also provide ‘live’ links between pharmaceutical suppliers and hospital warehouses.
There is limitless scope for deployment of RFID chips in a society where management of large businesses and clients is a growing necessity.