Smart Finance

We used to play with it, now it's worth a fortune: some technology items from our childhood are now really valuable.

Trump's Memecoin is making waves in cryptocurrency. It has started with a market cap in the billions and raises questions.

Trading Bitcoin, Ethereum and Co. is possible via crypto exchanges. TECHBOOK offers an overview of the portals.

Is Klarna looking into its customers' bank statements? This accusation is now in the air, and the company has responded.

Various data must be stored on debit and credit cards for secure transactions. TECHBOOK will tell you which ones and where.

The Giropay payment service offered secure online payments and sending money in real time. But the project has failed.

Current contactless payment cards are not particularly environmentally friendly. A new generation of debit and credit cards aims to change this.

Cash is convenient, anonymous, and extremely popular, but how much does cash cost? TECHBOOK provides an overview.

Card payments and cash differ in more ways than you might think. A study sheds light on their environmental impact.

Securities and crypto can be traded cheaply with neobrokers. But what exactly is behind them and what needs to be considered?

More and more people are paying for purely digital products. TECHBOOK explains the special features that apply.