Protection bag

tamper evident bag tape providing additional layer of security
Evidence bag
Currency bag

A security bag is a heavy duty bag used to contain high-value products or documents or legally sensitive items. Envelopes with security features are called security envelopes as well as security bags. Cash for deposit in a bank is often placed in a special deposit bag with security features [1][2]. When used to contain items related to a crime, special evidence bags are used[3]. Authentication of signatures and chain of custody are often required.


  • 1 Construction
  • 2 Use
  • 3 See also
  • 4 Notes
  • 5 References


Security bags or envelopes may be specially designed plastic bags, paper bags, or fabric bags. Bags or envelopes can be made to be tamper resistant (TR); to make it difficult for unauthorized entry. Often it is more important for them to be tamper-evident (TE); to indicate when an unauthorized entry has occurred.

Bags and envelopes are often closed by an integral pressure sensitive adhesive on the closing flap; removal of a release liner allows convenient closing of the bag. Several types of security features can be included in the flap structure which are designed to irreversibly indicate opening.[4][5][6][7][8][9][10]

Separate security tapes are also used. Tamper-indicating security seals employ a variety of mechanisms for operation, each with its own advantages and disadvantages.

Documentation such as labels for certified signatures for custody and chain-of-custody labels are frequently included.


No one security feature can be considered as “tamper proof”.[11] Layers of TR and TE features, as well as the broader security systems are needed to provide better assurance of security. Most security products can be foiled by a knowledgeable person with sufficient time and with access to specialized tools, solvents, extreme temperatures, other security bags, security tapes, etc.

See also[edit]

  • Currency packaging
  • Dye pack
  • Evidence management
  • Provenance
  • Package pilferage
  • Security seal
  • Traceability


  • ^ “Sealed Bag deposit Process” (PDF). Northwestern University. cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:”””””””‘””‘”}.mw-parser-output .citation .cs1-lock-free a{background:url(“//”)no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url(“//”)no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url(“//”)no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url(“//”)no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
  • ^ Bank of America (2015). “Preparing and Packaging Cash Vault Deposits” (PDF). Harvard University.
  • ^ Warrington, D (April 1, 2008). “Evidence Packaging”. Forensics.
  • ^ ‹See Tfd›US 20060066096 A1, ‹See Tfd›Shen-Nan Kan, ”Adhesive tape structure for sealing and keeping secrecy”, published 2006 
  • ^ ‹See Tfd›US 5918983 A, ‹See Tfd›John Palazzolo, ”Security Envelope”, published 1999 
  • ^ ‹See Tfd›US 5788377 A, ‹See Tfd›Vettor, ”Tamper-resistant envelope”, published 1996 
  • ^ ‹See Tfd›US 5108194 A, ‹See Tfd›Raden, ”Security bag”, published 1992 
  • ^ ‹See Tfd›US 20050036716 A1, ‹See Tfd›Geyer, ”Tamper indicating security bag”, published 2003 
  • ^ ‹See Tfd›US 5631068, ‹See Tfd›Smith, ”Self-containing tamper evident tape and label”, published 1997 
  • ^ ‹See Tfd›US 4449631 A, ‹See Tfd›Levenberg, ”Tamper proof packaging”, published 1984 
  • ^ Rosette, J L (2009), “Tamper-Evident Packaging”, in Yam, K L, Encyclopedia of Packaging Technology, Wiley (published 2010), ISBN 978-0-470-08704-6
  • References[edit]

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    • Rosette, J L, ”Improving Tamper-Evident Packaging: Problems, Tests and Solutions”, 1992
    • Yam, K.L., “Encyclopedia of Packaging Technology”, John Wiley & Sons, 2009, ISBN 978-0-470-08704-6

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