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Computer Science IGCSEPDF 57
142 pagesrevision 46930
PDF 57
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o
Stored on the
until deleted or expired.
Used to remember login information and preferences.
Tracking activity for analytics or targeted advertising
Introduced to overcome problems in centralized systems.
Uses cryptography for secure and verifiable transactions.
Operates on a decentralized Blockchain network.
Popular examples: Bitcoin, Ethereum, Litecoin.
Temporary; stored in RAM and deleted when the browser is closed.
Do not store personal information.
Example: Onlineshopping carts that hold items only during the session.
refers to electronic forms of money used for online payments.
Examples include:
o Debit/Credit Cards
o Mobile Payment Apps (PayPal, Apple Pay, Google Pay)
o Bank transfers and digital wallets
It allows fast, convenient transactions but still relies on centralized banking
systems.
2. Cryptocurrency
Types of Cookies
a) Session Cookies
Digital and Cryptocurrencies
1. Digital Currency
Digital currency
b) Persistent Cookies
hard drive
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