Cloud computing and ubiquitous computing systems

Cloud computing and ubiquitous computing systems

1. Cloud computing and cloud storage

   • cloud computing means using computer services on another organisation’s computers, which are known as hosts. The services are provided by organisations known as hosting companies. these are some companies Amazon®, Microsoft ® , Google™ and RackSpace.

2. Cloud storage is related to cloud computing- it is where only the storage, access and retrieval facilities are provided by the host provider, often via the internet.

3. Cloud computing and cloud storage

   • Reliability of the network You need to be able to get through to the host to access and process data.
   • Availability Data and les may be available anywhere in the world where there is an internet connection.
   • Security of data As the les are being stored by the host, you have no control over them. You need to be aware of their security terms and policies.
   • Potentially lower performance The speed of retrieval of data may be slower than it would be on a local database held in-house.
   • Software The host might not be using the latest, fastest and most secure version.

4. Ubiquitous computing systems

   • Ubiquitous means ‘existing everywhere’. Processors can be embedded in any device, including clothing, appliances, vehicles, buildings and people, to connect them to the internet so that the data generated by the processors will be readily available.

5. Radio frequency identification (RFID)

   • Currently, objects within a ubiquitous computing environment usually contain radio frequency identification (RFID) chips. RFID is a technology that uses radio waves to transfer data to a tag on a person or an object so that the person/object can be identified and tracked. These tags contain information that is stored electronically and which can be transmitted. It is similar to the bar code systems used in supermarkets, but unlike a bar code, RFID does not need to be scanned. An example of a use of RFID is the cat flaps that only open for the animal that has the correct chip in its collar.

6. Applications of ubiquitous computing

   • Currently, there are computing systems in place which monitor the shelf and warehouse stock. This technology is used by many industries (supermarkets, book and DVD suppliers, car part manufacturers, etc). When the stock reaches a certain minimum level, an order is automatically placed with the appropriate supplier electronically. Mainly this is done by a process where the tills feed product sales to a central computer, which then calculates the present stock. Currently manual checks still have to be made to allow for ‘shrinkage’ (i.e. loss due to theft or damage). However, there are now experimental systems involving products which contain RFID. The RFIDs register when any product leaves the premises.
     • Some futuristic examples of ubiquitous computing include: • a car that can inform the owner when it needs servicing, book itself into the garage and place orders for any parts needed • a refrigerator that can monitor its contents, compile an order as food is used and add the items to the user’s online shopping account.