Communication in general is important. Keeping in contact with your family will make sure they are not worried about your whereabouts but it also adds an additional layer to your safety in general. The camino is safe, but it is always good to have people around you knowing where you are and where you are going to be. The cheapest way is to get a local SIM for local calls and to communicate with your family and friends back home via Wi-Fi. Read more about communication on the camino here.
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