1. Chapter 2 Revision

2. Possible Exam questions Describe what a search engine does Searches the WWW using keywords and returns the results Identify how to limit the number of hits from a search Only use appropriate keywords Make hits as useful as possible to the task Use quotes and advanced search pages

3. Biometrics/Microchip Biometrics is a way of giving access to people, who prove who they are by scanning part of their body, usually a fingerprint or a retina. Fingertips and retinas are unique, so no one else will have the same pattern on their fingertips or retina as you. Using biometric scanning is a good way of making sure that unauthorised people cannot get access to things. It is also quick and easy to use, as well as being relatively accurate. http://www.bbc.co.uk/learningzone/clips/fingerprint- scanners-in-schools/8379.html http://www.bbc.co.uk/learningzone/clips/fingerprint- scanners-in-schools/8379.html

4. Cameras/Camcorders Digital (stills) camera Digital camcorders Students should know the difference between high definition (HD) and standard definition (SD).

5. Navigation Aids In-car sat navs Specialist sat navs, e.g. for walkers and cyclists An in-car sat nav could be a separate unit, or integrated into the dash.

6. Types of Biometrics Face – Facial features and their position on the face are analysed. Fingerprint – Probably the most commonly used body part used in biometric scanning. The analysis of the pattern on an individual’s fingerprint. Hand Geometry – The shape of the hand and other features, such as the length of the fingers, is analysed Retina – The analysis of the capillary blood vessels located at the back of the eye Iris – The analysis of the coloured ring that surround the eye’s pupil Vein – The pattern of the veins in a person’s hand or wrist is analysed Voice – The tone, pitch and frequency of someone’s voice is analysed.

7. RFID Chips (Radio Frequency Identification) RFID chips are tiny microchips that can be inserted into items. They are set to replace bar codes, as the chips can be read from long distances. However, RFID chips may pose a threat to people’s privacy for this reason. RFID chips aren’t always on. They only respond when the chip reader asks for a response from the chip. http://www.youtube.com/watch?v=ffTbpmYapHo &feature=related http://www.youtube.com/watch?v=ffTbpmYapHo &feature=related

8. Conserve Power when using a PC Do not Play multimedia Reduce the screen brightness Change the power options and allow the computer to turn off when it is inactive Copy CD/DVDs to the hard drive and play them from there as this uses less power than when using the optical Drive Turn off the Wifi and Bluetooth when not in use Disconnect devices which are not being used Use earphones as opposed to the speakers

9. Camera features Resolution- quality of photos Close up and wide angle shots Storage capacity

10. NetBooks What makes a netbook suitable for a traveller?

11. Netbook Features  Robust  Lightweight  Solid state drives – no moving parts  Long battery life  Wi-Fi enabled  Can easily fit into a bag out of sight of potential thieves

12. Summary Useful for everyoneEspecially useful for travellers MicrophoneLightweight SpeakersRobust KeyboardLong battery life USB portsWiFi enabled Clear bright screenSolid state hard drive without disks

13. What makes a netbook suitable for use in classrooms? Quick to start up Does not take up much space on the desk Can easily fit in a school bag Inexpensive Wi-Fi enabled Can stay logged on all day

14. CyberCafes How do you stay safe in a cybercafe?

15. Answers Never store passwords delete all temporary files after use delete any stored passwords after use; delete all cookies delete anything copied to the computer from an SD card or memory stick check that you have logged out from email or messenger software make sure email software is set to ‘do not remember password’ do not access bank accounts, etc. as there may be spyware on the computer.

16. LOL!

17. How to transfer photos? How would you transfer photos you have taken on your camera or mobile phone?

18. Mobile phones + Cameras All mobile phones can use Bluetooth, but most basic digital cameras do not, while most digital cameras are provided with a USB lead, but not all mobile phones have a USB port. All mobile phones and digital cameras use flash memory cards, such as SD cards. Using Bluetooth would be the most difficult and the slowest method, with a maximum transfer rate of 1 Mbs.

19. Mobile phones + Cameras USB can achieve 480 Mbs, while memory cards have a transfer rate of 15–45 MBs. (Note: the first two are in megabits, while the memory card is megabytes.) Using a memory card would be the quickest for transferring images. When travelling, a USB cable would take up space or could be lost. Taking the memory card out of the camera and placing it in the netbook would be the simplest and fastest method.

20. Online Photo Albums

21. Answers They are free. Users can create different albums for different people (they may have images they want to show their friends but do not want their parents to see!) Users can add a description and friends can add their comments

22. Cloud computing http://www.youtube.com/watch?v=n9LmzsaO 698 http://www.youtube.com/watch?v=n9LmzsaO 698 http://www.youtube.com/watch?v=eRqUE6IH TEA http://www.youtube.com/watch?v=eRqUE6IH TEA Google Docs

23. Cloud computing Programs and data is stored centrally All documents are stored online You need an internet connection No need to buy expensive software or powerful computers with a large hard drive

24. What are the advantages and disadvantages of cloud computing?

25. Answers AdvantagesDisadvantages No need to buy/upgrade software No need for large storage devices Can access documents anywhere Can work on documents with others No need for USB memory stick Internet may be inaccessible Slower to load documents Someone else has your documents The firm may close down Easier for data to be stolen

26. Web Apps Web application Any application that can be accessed using a web browser It can be as simple as a message board or a spreadsheet http://simplespark.com/ http://www.youtube.com/watch?v=jB5KFJULahs http://www.youtube.com/watch?v=QuRpva5-j4w

27. GPS- different to tracking! Gives directions based on information received from satellites Uses a satnav Tracking- used in your exam question to track van drivers

28. Metadata Provides information about the content of a digital item Each digital image has a file attached to it which says date, time etc….

29. Geotag Attaches the exact geographical co-ordinates of longitude and latitude to a digital image giving the location of where it was taken 515553,192260

30. To find out where the images were taken Copy and paste the co-ordinates in to Google Maps or Google Earth to get the exact location a photo was taken

31. GPS Tracking Business use this to improve efficiency You need a GPS system and modem Uses the mobile phone network to tell the firm where the Van is http://www.bbc.co.uk/learningzone/clips/gps- background/6409.html http://www.bbc.co.uk/learningzone/clips/gps- background/6409.html

32. Advantages/ Disadvantages  It could help to re-route the vans if there are traffic problems.  It could re-route the vans to pick up a new delivery as it knows where each one is all the time.  It can check how often a van is parked such as at lunch time.  It can check the speed of the van.  They will feel that they are not trusted and are being spied on by the company.  May make them drive faster and so break the law or become unsafe.  May increase the stress levels of the workers.

33. May ask about children being tracked!

34. Geo Caching Game to locate an item Uses GPS and co-ordinates attached to an item

35. Convergence One devices carrying out many other tasks Best example mobile phones! We watched the Click clip about this! http://www.bbc.co.uk/iplayer/episode/b017g z33/Click_12_11_2011/ http://www.bbc.co.uk/iplayer/episode/b017g z33/Click_12_11_2011/