When you buy Bitcoin on Gemini, the exchange holds your keys. A hardware wallet like Ledger lets you own them yourself. Most people use both. Gemini is for buying and spending. Ledger is for long-term storage where no company can touch your coins. Buy on Gemini, transfer to Ledger when ready to hold long term. Keep spending money on Gemini. Keep savings on Ledger.

Retailers like Walmart and Kroger are using facial recognition to build customer profiles and even test "dynamic pricing." Is your privacy being erased? This guide explores how 2D surveillance cameras map your face and why standard sunglasses fail to protect you. Learn how new infrared-blocking technology, like Zenni’s ID Guard, allows you to reclaim your anonymity and become a "hard target" against biometric profiling without looking out of place.