Philosophy:Security bag

From HandWiki
Short description: Heavy duty bag used to contain high-value products or documents or legally sensitive items
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.


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 to make it difficult for unauthorized entry; often it is more important for these to be tamper evident, 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. All security products can be foiled by a knowledgeable person with sufficient time and with access to specialized tools, solvents, extreme temperatures,[12] other security bags, security tapes, etc.

See also


  1. "Sealed Bag deposit Process". Northwestern University. 2016. 
  2. Bank of America (2015). "Preparing and Packaging Cash Vault Deposits". Harvard University. 
  3. Warrington, D (April 1, 2008). "Evidence Packaging". Forensics. 
  4. Kan, Shen-Nan, "Adhesive tape structure for sealing and keeping secrecy", US patent application 2006066096, published 2006-03-30, now abandoned.
  5. Palazzolo, John, "Security envelope", US patent 5918983, published 1999-07-06, now expired.
  6. Vetter, Kurt W., "Tamper-resistant envelope", US patent 5788377, published 1998-08-04
  7. Raden, David T., "Security bag", US patent 5108194, published 1992-04-28, now expired.
  8. Geyer, Thomas, "Tamper indicating security bag", US patent application 2005036716, published 2005-02-17, now abandoned.
  9. Smith, Christopher A., "Self-containing tamper evident tape and label", US patent 5631068, published 1997-05-20
  10. Levenberg, Nat & Alvin Levenberg, "Tamper proof packaging", US patent 4449631, published 1984-05-22
  11. Rosette, J L (2009), "Tamper-Evident Packaging", in Yam, K L, Encyclopedia of Packaging Technology, Wiley, 2010, ISBN 978-0-470-08704-6 
  12. Smith, Christopher A., "Self-containing tamper evident seal", US patent 5798169, published 1998-08-25


  • 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