RFID and online shopping Assignment Example | Topics and Well Written Essays - 750 words

RFID and online shopping - Assignment Example This gives leverage to exploit hackers and online criminals to exploit the age of the internet. Technology is moving into human bodies quickly (Keenan, 2014). Humans are gradually becoming slaves to technology. Software and machines know the most intimate secrets of a person. Apps and devices track blood-sugar level, heart rate and blood pressure. It won’t be hard for a hacker to sell medication to diabetic patients after obtaining this useful information. One does not even need to be that illegal to exploit internet privacy. Studying shopping habits is becoming a science in itself. The internet has provided so many in-depth tools to marketers that they can explore shopping behaviors by regions (towns, suburbs etc.) and persons. A shopper might put in some key words in the search engine and in just a few seconds he might see banner ads selling the exact or a relevant product to this person. This precise form of marketing is frightening. It reveals how much activity of a person can be tracked over the internet. One study conducted on online shoppers showed that the privacy concern is a major impediment of truthful and deep online interaction (Flick, 2009). Shoppers are always concerned about their information security. Different credible shopping websites have to show a licensed banner for the online security of their fund transfers. News of identity theft, credit card scams, online stalking and threats over social media are not new. The surprising part is that not everyone engages so much over the internet to become a victim of cybercrimes. Internet privacy is among the most widely discussed subjects in print and electronic media (Chamorro-Premuzic, 2014). A significant number of people are now informed of this menace. People are not comfortable giving sensitive information online. But modern lifestyle almost demands engagement with technology and modern shopping trends. People are outsourcing their lives to

Transformer Assignment Essay Example | Topics and Well Written Essays - 1000 words

Transformer Assignment - Essay Example A simple way to remember it is the Left Hand Thumb rule. If we grasp the conductor in our left hand with our thumb extended in the direction of current (from –ve to +ve), our finger will point in the direction of magnetic lines of forces. When two or more current carrying conductors are placed parallel to each other in a way that the direction of current is the same in all of them, as shown in Figure 2, then the magnetic lines of forces aid each other to combine and strengthen the magnetic field further. If the two conductors so placed have current flowing in opposite direction then the magnetic lines oppose each other to deform and weaken the magnetic field. The magnetic field around the conductor exists at points along the length of the conductor. When the conductor is wound in the shape of a coil, as in Figure 3, then magnetic field around each turn of the coil is aided and strengthened by the fields of adjacent turns in the coil. The resultant is a magnetic field resembling a bar magnet with one end as North and the other as South of the magnet. When the direction of current is reversed it causes the direction of magnetic field to be reversed. If we grasp the coil with our left hand with our fingers pointing in the direction of current, as in Figure 4, the thumb will point in the direction of magnetic field. Conversely, to what we have discussed till now, if a conductor is placed in a magnetic field and there is a relative movement between the field and the conductor, an electromotive force (emf) is induced in the conductor. This effect is called electromagnetic induction. Both of these phenomenons, of creating a magnetic field and then utilizing electromagnetic induction form the basis of transformers. At one end alternating current (AC) is passed through a coil, this gives rise to a magnetic field which spreads out and subsides with the same frequency as of the AC applied. This changing magnetic field in fact is a replacement to moving