[Solar-general] Carta Abierta

Jue Mar 1 21:40:50 CET 2007

On 3/1/07, bubi at opensa.com.ar <bubi at opensa.com.ar> wrote:
> en caso de que se quieran repartir dispositivos, a nivel educativo sin saber
> cuantos ni que caracteristicas , a alumnos de no sabemos que edad ni que

Muchas de esas cosas estan contestadas en el blog de educ.ar. Hay toda
una sección sobre OLPC.
Se estima que van a ser 1.000.000 de máquinas. La edad es entre 2do y
5to grado (7 y 10 años supongo).

> localidad , que seran evaluados y ayudados no sabemos porque docente formado

Eso ni idea.

> o algun técnico , y si esos dispositivos funcionan o no en la casa del
> supuesto alumno o no, y si tienen algun sistema de comunicacion que pueda

Si, funcionan en las casas. Vienen "desactivadas" de fábrica, y los
codigos de activacion iran en una memoria USB a las escuelas, asi las
activan a medida que se entregan. Mira aca:

The process starts at manufacturing time, when each laptop will be
equipped with unique, randomly-generated serial and UUID numbers. The
laptop starts out in a non-functional, deactivated state; making it
work involves the use of a special activation key generated from the
serial number and UUID. The customer countries will have lists of
serial and UUID numbers; from those it will be able to create the
activation keys. The plan is for these keys to be generated in small
batches and shipped, on a USB key, to the destination schools. Once
installed on a server there, the keys can be used to enable the
laptops sent specifically to that school. The purpose here is to deter
thieves who would grab pallets of laptops; without the activation
keys, those laptops would only be useful as spare parts.

> ser bloqueado o no,  que avisen a educ.ar o al ministerio de educacion , a
> la gobernacion , o a la intendencia o al colegio , o a la policia federal o
> provincial o al FBI,   etc, etc, etc.

Las OLPC "llamaran" al server (server que compra el gobierno) primero
para sincronizar el reloj, cosa de poder controlar que cada un tiempo
X están en donde tienen que estar:

There is also an optional anti-theft mechanism:

It works by running, as a privileged process that cannot be disabled
or terminated even by the root user, an anti-theft daemon which
detects Internet access, and performs a call-home request -- no more
than once a day -- to the country's anti-theft servers. In so doing,
it is able to securely use NTP to set the machine RTC to the current
time, and then obtain a cryptographic lease to keep running for some
amount of time, e.g. 21 days. The lease duration is controlled by each
country.

If a machine has been reported as stolen, the "anti-theft server" will
instruct it to shut down hard and go back into the deactivated state.
The same thing will happen eventually if the stolen system is kept
isolated from the net. This mechanism should help to deter thefts