Sneakernet may be used when computer networks are prohibitively expensive for the owner to maintain, in high-security environments where manual inspection ( for re-classification of information ) is necessary, where information needs to be shared between networks with different levels of security clearance, when data transfer is impractical due to bandwidth limitations, when a guest laptop is incompatible with the local network, or simply when two computers are not powered up at the same time or lack the correct interconnecting cabling.
