Another issue is caller number identification: the ability of the person called to see and capture electronically the phone number of the caller. Arguably, in some cases in an emergency it is useful for people to be able to make anonymous phone calls. On the other hand, the aggressor may try to disrupt the resistance by feeding lots of misleading information into the resistance networks, in which case caller number identification would be useful to the resistance. More investigation and the running of simulations would help in deciding in what circumstances caller number identification would be an advantage for a nonviolent resistance.[18]

Fax machines run on telephone lines, but are different in two ways: they transmit a printed document rather than sounds, and the recipient does not need to be there for the transmission to occur. Fax is a decentralised communication system and has many similarities to both the post and computer networks. Generally speaking, fax is quite useful to the resistance. “Secure” transmissions — sending a fax that can only be printed when the receiver puts in a code — are now possible with some fax machines. The main improvement for fax would be encryption, so that messages cannot be intercepted en route.

The post

The postal system is a global communication network which is generally quite useful for nonviolent activists. A government seeking to monitor the post cannot hope to open and inspect every piece of mail without large amounts of labour and considerable disruption of everyday life. Therefore the usual procedure is selective monitoring of mail: intercepting, reading and sometimes confiscating mail sent by or to particular targeted individuals or organisations. In order to achieve this, it is helpful for all mail in a country or region to be routed through a single central post office.

To get around monitoring of the post mostly requires organisational rather than technological means. The more that collection, sorting and distribution of mail are done locally, the more difficult it is for any group to monitor or intercept the post. Also, the more decentralised are the authority structures within the postal service, the more difficult it is for an aggressor to take control using only a few trusted staff. If there are several, rather than just one, postal services — such as competing private carriers — then it becomes more difficult to take central control.

It is significant in this regard that most governments have tried to monopolise postal delivery by outlawing, heavily taxing or tightly regulating private delivery services. In the historical development of the post, this was done in order to raise revenue and to prevent enemies from communicating without the ruler’s knowledge.[19] This shows that secure and reliable postal delivery — not easily monitored centrally — is of great value to nonviolent opponents of tyranny.

More fundamental than formal ownership of postal services is the attitude of postal workers. If they are sympathetic to the resistance, then they can ensure that important letters or parcels are delivered without inspection. They are also in a good position to deliver messages from the resistance along their delivery routes. It’s also possible for the resistance to avoid interception by using false names and addresses, putting one letter inside another, and various other techniques.

There are a few technological systems that are relevant. One is automatic sorting of letters by postcode. If this is used in some way to help monitor the post, the machines could easily be disabled. In any case, it would be an interesting problem to design such equipment so that it provided no advantage for any group wishing to monitor the post. Another issue is the surveillance of postal workers using videocameras and other apparatus. Such surveillance could be used by agents of an aggressor to detect postal workers supporting the resistance. For the purposes of nonviolent resistance, it would be best to get rid of technology that puts workers under surveillance.

Conversations and meetings

In spite of all the technological advances, face-to-face conversations remain one of the very best means of communication. Also quite useful are meetings, whether this involves 3, 30 or 300 people. The smaller the number of people in a meeting, generally, the more each person can contribute and the fewer opportunities there are for manipulation or domination. It may be worthwhile for an aggressor to send observers or arrange for surveillance of mass meetings of hundreds or thousands of people. But monitoring of hundreds or thousands of small meetings becomes impossible.