Chip, magnetic strip, ... What data is stored on bank cards and credit cards, and where is it stored?
Various data must be stored on debit and credit cards for secure transactions. TECHBOOK will tell you which ones and where.
Shop & Pay
End of December Well-known online payment method to be discontinued! What customers need to know
The Giropay payment service offered secure online payments and sending money in real time. But the project has failed.
Banking What will change for contactless payment cards in the future
Current contactless payment cards are not particularly environmentally friendly. A new generation of debit and credit cards aims to change this.
Production, transportation, payments, ... How much does cash cost?
Cash is convenient, anonymous, and extremely popular, but how much does cash cost? TECHBOOK provides an overview.
Better buyer protection Amazon warranty rules adjusted for retailers - the consequences for customers
Amazon has updated the A-to-Z warranty program and expects retailers to have commercial liability insurance in the future.
Study proves Card payments are more environmentally friendly than cash
Card payments and cash differ in more ways than you might think. A study sheds light on their environmental impact.
Trade securities free of charge These are neobrokers - this is what makes them different
Securities and crypto can be traded cheaply with neobrokers. But what exactly is behind them and what needs to be considered?
Downloads, e-books, ... Do digitally purchased products really belong to me? Which regulations apply
More and more people are paying for purely digital products. TECHBOOK explains the special features that apply.
Everyday question Does a full refrigerator consume more electricity than an empty one?
Does having lots of food in the refrigerator use more electricity? This is what an expert says on the subject.
After Rewe and Obi Aldi discontinues popular service offer! Customers have to adapt
Aldi has announced its intention to discontinue the classic paper brochure in the future. A trial will test how customers respond to this.
After insolvency Major online retailer closes! Customers must act fast
Weltbild is insolvent and is not only closing all its stores, but also its online business. Users must therefore back up digital content immediately.
Amazon founder 5 things Jeff Bezos predicted back in 1999
Jeff Bezos recognized the potential of online retail early on, but also predicted other things back in 1999.
Caution Police warning! Do not accept parcels for neighbors
The bell rings and a delivery person asks you to accept a parcel for a neighbor. However, be careful when accepting parcels for neighbors.