Guides
Short answers for the first hour
Four practical guides for when a reader, a bank app, or the power is the problem. The longer scenarios are there when it lasts for days.
When card readers are down
The card reader says offline. What to do at the register, how offline payments can post late, and how to check for double charges afterward.
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When your bank app or ATM is down
Your money is still insured. What to check first, how to avoid outage scams, and how to handle bills and cash while your bank's systems are down.
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How much cash to keep at home
No magic number, but a simple way to work out yours: three days of essentials to start, a week to aim for, in small bills, stored sensibly.
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Power bank vs power station
Which one you actually need for a multi-day outage, how to read watt-hours, how to estimate runtime, and why neither is a generator.
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In New York City, see outage prep for an NYC apartment.