Examlex
Points inside the PPF are all
Medium of Exchange
An intermediary instrument or system used to facilitate the sale, purchase, or trade of goods between parties.
Digital Wallet
A digital system that allows individuals to make electronic transactions using a computer or smartphone, including storing various forms of currency and cards.
Public Keys
Part of a cryptographic system used in digital communication that allows users to securely exchange data over an insecure network.
Private Keys
Cryptographic keys used in public-private key encryption schemes that are kept secret and used to decrypt information or digitally sign data.
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