Now lets assume that in one office there are 10 employees and that 5 of them want to buy my book. How do I make sure that if I give the password to one of them he or she will not share the password with the others?
No sé proteger mi libro de ser repartido entre todos. Supongamos que en una oficina hay 10 empleados y que 5 de ellos quieren comprar mi libro, ¿qué hago para que no compartan la contraseña entre ellos?