In the context of blockchain technology, multisignature (or multisig) transactions are designed to increase the security of crypto transactions. They require multiple keys (signatures) to authorize a transaction or access a particular wallet, rather than relying solely on one key. This method is particularly useful in scenarios such as corporate governance (where several individuals must approve expenditures), escrow services (to release funds only when all parties agree), or protecting digital assets from theft by distributing control among multiple parties.