What are the limitations of card indexing?

Card index was developed by a French person called Jean Rozier. Each subject or customer is allotted with a separate card on which required information is written back. These similar sized cards are arranged in order. These cards are put in the drawer through a rod to hold them together. The limitations of card index are:

(a) Wrong placement of card may create difficulties of location.

(b) Cards may be substituted to conceal fraud.

(c) It becomes a difficult task to have a constant check on the card to see that cards removed for reference are put back.

(d) Cards are to be replaced from time to time because they are soiled through constant handling.

(e) It creates a danger if a card is destroyed.

(f) It involves greater cost and small firms cannot afford for it.

(g) It takes too much time to see one card.