This an Idea for storage servive. First I'm going to say that everybody going to run a storage service has to charge a service charge to customers to store people items and so.
Now the hard part. TRUST. How we make trust each other. Well we can talk collateral. Lets say when I ask my teacher for pensil to wrtite she will ask for something in return to hold incase I forget to returen it. Like for a pencil I give my teacher my bag pack in return. Like that I will reminded that when I go home from school I have to give her her pencil to get my back pack back.
Ok. Now for PE. Talking that the service charge already been applied. If a customer put items for storage give them the total tt price of the items they gave you. Now when they go to pick up ther items they give you back the peds of the total of tt of the items they have in storage. Now if they have the peds to get there items back they can't until they have the total tt price. or if they get only a portion of there items in storage they give the tt of the value to get them back. Just remember we talking about the peds you gave them when they put there items in your storage.
Now lets say you give the peds of tt value of the items they putting on your storage, And they never come back to get there items or modify(add or take items) within a time limit you set a rule that you have the right to sell there items if they never show up so it could accomidate of the peds you gave them for the tt price of putting the items in there storage.