There are many fantastic electronic resources available for self-reliant folks of all types. One of the major downsides to many of them is that they need internet access to function, which greatly limits their utility in emergencies where internet access is very often down.
Because of this and the fact they need electricity to work, there was a time when preppers refused to trust any equipment that ran on batteries or had a power cord. Fortunately, technology has come a long way since that time.
Preparing Your Electronics for Survival
Some electronics are certainly better built and more rugged than others, and anything not specifically hardened against EMP could be damaged by it, but some portable electronics, such as many mil-spec handheld amateur radios, are very rugged and well shielded against EM (electromagnetic) radiation.
If they were not well shielded, they would be damaged when powerful radios transmitted in close proximity to them. Thanks to lightweight EM shielding in the form of convenient and economical “blackout” or EMP bags, it is now possible to attain a reasonable level of shielding (45-72dB in the 30MHz-10GHz range) for portable electronics.
Many shielded envelope products are also waterproof and keep out dust as well, increasing their utility. Battery and renewable energy technology have also improved substantially in the last decade. Combine these factors with ever smaller and more robust smart phones, tablets, and mobile computers packing mind-blowing arrays of sensor technology and you have some pretty effective tools for survival.