The practices which continue today are similar, from examples such as envelopes to carefully designed packaging for pay slips. It is common to see each page of a contract individually initialed and numbered so that any addition or removal of pages can be detected. Most cheques have a variety of features to defeat both tampering and duplication and these are often listed on the back of the cheque.
Anti-tamper holograph and prism labels have been developed and these are difficult to duplicate.
Security seals are commonly employed on devices like electronic voting machines in an attempt to detect tampering if it occurs. Testing methods demonstrates however that existing seal can usually be quickly defeated by trained people using low-tech methods.